Whenever a creature enters the battlefield, Aether Flash deals 2 damage to it.

Other enchantments have "At the beginning of your upkeep, sacrifice this enchantment unless you pay {2}."

Whenever a player casts a spell, that player gains X life, where X is the number of cards in all graveyards with the same name as that spell.

Counter target instant or Aura spell that targets a permanent you control.

Indestructible

When Barbed Servitor enters the battlefield, suspect it. (It has menace and can't block.)

Whenever Barbed Servitor deals combat damage to a player, you draw a card and you lose 1 life.

Whenever Barbed Servitor is dealt damage, target opponent loses that much life.

Creatures can't block.

At the beginning of each player's upkeep, that player returns a permanent they control to its owner's hand unless they pay 2 life.

Flying

Whenever Brago, King Eternal deals combat damage to a player, exile any number of target nonland permanents you control, then return those cards to the battlefield under their owner's control.

Prevent all damage that would be dealt to creatures.

{3}, {T}: Until end of turn, you may cast instant and sorcery spells from the top of your graveyard. If a spell cast this way would be put into a graveyard, exile it instead.

Whenever a creature enters the battlefield, you lose 1 life and add {B}.

Lands you control are Plains.

Nonland permanents you control are white. The same is true for spells you control and nonland cards you own that aren't on the battlefield.

You may spend white mana as though it were mana of any color. You may spend other mana only as though it were colorless mana.

As Circle of Solace enters the battlefield, choose a creature type.

{1}{W}: The next time a creature of the chosen type would deal damage to you this turn, prevent that damage.

At the beginning of your end step, you may exile target creature you control, then return that card to the battlefield under your control.

Whenever you discard a card, you may exile that card from your graveyard. If you do, you may play that card this turn.

At the beginning of each opponent's upkeep, that player loses X life, where X is the number of cards in that player's hand minus the number of cards in your hand.

Prevent all combat damage that would be dealt this turn.

Whenever a creature is dealt damage, destroy it. It can't be regenerated.

Rather than the attacking player, you assign the combat damage of each creature attacking you. You can divide that creature's combat damage as you choose among any of the creatures blocking it.

If damage would be dealt to you, put that many delay counters on Delaying Shield instead.

At the beginning of your upkeep, remove all delay counters from Delaying Shield. For each delay counter removed this way, you lose 1 life unless you pay {1}{W}.

{T}: Add {C}.

{2}, {T}, Sacrifice Demolition Field: Destroy target nonbasic land an opponent controls. That land's controller may search their library for a basic land card, put it onto the battlefield, then shuffle. You may search your library for a basic land card, put it onto the battlefield, then shuffle.

Destroy any number of target creatures. For each creature destroyed this way, its controller creates a 4/4 red Dragon creature token with flying.

If a source would deal 4 or more damage to a permanent or player, that source deals 3 damage to that permanent or player instead.

As an additional cost to cast this spell, sacrifice a creature, discard a card, or pay 4 life.

When Dusk Mangler enters the battlefield, each opponent sacrifices a creature, discards a card, and loses 4 life.

Enchant permanent

At the beginning of your precombat main phase, add mana equal to enchanted permanent's mana cost. (Mana cost includes color. If a mana symbol has multiple colors, choose one.)

Flying

Whenever Emissary of Despair deals combat damage to a player, that player loses 1 life for each artifact they control.

At the beginning of your end step, target enchantment deals damage equal to its mana value to its controller unless that player sacrifices it.

When Eye of Singularity enters the battlefield, destroy each permanent with the same name as another permanent, except for basic lands. They can't be regenerated.

Whenever a permanent other than a basic land enters the battlefield, destroy all other permanents with that name. They can't be regenerated.

Whenever a creature dies, tap all untapped creatures that share a creature type with it or untap all tapped creatures that share a creature type with it.

All creatures get +X/-X until end of turn.

Until end of turn, whenever a creature you control attacks and isn't blocked, you may choose to have it deal damage equal to its power to a target creature. If you do, it assigns no combat damage this turn.

Protection from permanents with corruption counters on them

+1: Each opponent loses 2 life and you gain 2 life. Put a corruption counter on up to one other target creature or planeswalker.

-3: Gain control of target creature or planeswalker until end of turn. Untap it and put a corruption counter on it. It gains haste until end of turn.

-7: Gain control of each permanent with a corruption counter on it.

Tap two untapped artifacts you control: Ghirapur Aether Grid deals 1 damage to any target.

Flying

When Havoc Eater enters the battlefield, for each opponent, goad up to one target creature that opponent controls. Put X +1/+1 counters on Havoc Eater, where X is the total power of creatures goaded this way.

Activated abilities of creatures cost {1} less to activate. This effect can't reduce the mana in that cost to less than one mana.

Shroud (This enchantment can't be the target of spells or abilities.)

{X}: Put X tower counters on Helix Pinnacle.

At the beginning of your upkeep, if there are 100 or more tower counters on Helix Pinnacle, you win the game.

{T}, Sacrifice a creature: Return target creature card from your graveyard to the battlefield. Activate only during your upkeep.

{T}: Add {C}.

{T}: Each player gains control of all creatures they own.

Whenever a player casts a spell, any other player may pay that spell's mana cost. If a player does, counter the spell. (Mana cost includes color.)

Whenever an ability of equipped creature is activated, if it isn't a mana ability, copy that ability. You may choose new targets for the copy.

Equip {3}

{T}: Choose a creature type other than Wall. Target creature becomes that type until end of turn.

Change the target of target spell with a single target. You lose life equal to that spell's mana value.

Destroy X target artifacts and/or creatures. For each permanent destroyed this way, its controller reveals cards from the top of their library until an artifact or creature card is revealed and exiles that card. Those players put the exiled cards onto the battlefield, then shuffle.

Whenever you cast a spell, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Enchant creature

Whenever enchanted creature blocks or becomes blocked by a creature with toughness 3 or less, destroy the other creature at end of combat. At the beginning of the next end step, if that creature was destroyed this way, put a +1/+1 counter on the first creature.

At the beginning of your upkeep, put a time counter on Infinite Hourglass.

All creatures get +1/+0 for each time counter on Infinite Hourglass.

{3}: Remove a time counter from Infinite Hourglass. Any player may activate this ability but only during any upkeep step.

{3}, {T}: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.

Phasing (This phases in or out before you untap during each of your untap steps. While it's phased out, it's treated as though it doesn't exist.)

Creatures with flying can't attack or block, and their activated abilities with {T} in their costs can't be activated.

Whenever an opponent draws a card, if you control a red permanent, you may have Kederekt Parasite deal 1 damage to that player.

As Kindred Boon enters the battlefield, choose a creature type.

{1}{W}: Put a divinity counter on target creature you control of the chosen type.

Each creature you control with a divinity counter on it has indestructible.

Flying

Whenever a permanent owned by another player is put into a graveyard from the battlefield, you draw a card and you lose 1 life.

Enchant creature

Whenever enchanted creature becomes blocked, you may have it deal damage equal to its power to target creature. If you do, the first creature assigns no combat damage this turn.

Whenever a permanent other than Last Laugh is put into a graveyard from the battlefield, Last Laugh deals 1 damage to each creature and each player.

When no creatures are on the battlefield, sacrifice Last Laugh.

Sacrifice a creature: You gain life equal to the sacrificed creature's toughness. Activate only during your upkeep.

{G}{G}: Counter target black spell.

At the beginning of your upkeep, you may put a verse counter on Lilting Refrain.

Sacrifice Lilting Refrain: Counter target spell unless its controller pays {X}, where X is the number of verse counters on Lilting Refrain.

Flash

When Lost in the Maze enters the battlefield, tap X target creatures. Put a stun counter on each of those creatures you don't control. (If a permanent with a stun counter would become untapped, remove one from it instead.)

Tapped creatures you control have hexproof.

Cast this spell only if an opponent cast a creature spell this turn.

You may put a green creature card from your hand onto the battlefield.

You may have Machine God's Effigy enter the battlefield as a copy of any creature on the battlefield, except it's an artifact and it has "{T}: Add {U}." (It's not a creature.)

{T}: Add {U}.

Flying

{T}: Non-Wall creatures the active player controls attack this turn if able. At the beginning of the next end step, destroy each of those creatures that didn't attack this turn. Activate only during an opponent's turn and only before combat.

Whenever another artifact is put into a graveyard from the battlefield, Magnetic Mine deals 2 damage to that artifact's controller.

Mana Bloom enters the battlefield with X charge counters on it.

Remove a charge counter from Mana Bloom: Add one mana of any color. Activate only once each turn.

At the beginning of your upkeep, if Mana Bloom has no charge counters on it, return it to its owner's hand.

Counter target spell unless its controller pays {1}.

{1}{U/R}{U/R}: Copy target instant or sorcery spell that targets you. You may choose new targets for the copy.

Put up to three target cards from an opponent's graveyard on top of their library in any order.

{1}{U}: Choose a creature type other than Wall. Target creature becomes that type until end of turn.

Flying

{1}: Mistform Wakecaster becomes the creature type of your choice until end of turn.

{2}{U}{U}, {T}: Choose a creature type. Each creature you control becomes that type until end of turn.

Look at the top seven cards of your library. You may put one of those cards onto the battlefield if it has the same name as a permanent. Put the rest on the bottom of your library in any order.

At the beginning of each player's end step, tap all untapped Islands that player controls and Monsoon deals X damage to the player, where X is the number of Islands tapped this way.

Your commander costs {1} less to cast for each time it's been cast from the command zone this game.

Whenever your commander is put into the command zone from anywhere, draw a card.

Whenever a source you control deals damage to another player, put that many theft counters on Night Dealings.

{2}{B}{B}, Remove X theft counters from Night Dealings: Search your library for a nonland card with mana value X, reveal it, put it into your hand, then shuffle.

Exile an instant or sorcery spell you control: Put two +1/+1 counters on Nivmagus Elemental. (That spell won't resolve.)

Whenever one or more creatures attack you, you gain 1 life for each attacking creature.

X target blocked creatures assign their combat damage this turn as though they weren't blocked.

Destroy target creature. You draw X cards and you lose X life, where X is the number of counters on that creature.

Choose a creature type. If you control more creatures of that type than each other player, you gain control of all creatures of that type. (This effect lasts indefinitely.)

Choose one --

• Target opponent sacrifices a creature.

• Target opponent sacrifices an enchantment.

{3}{G}: Target opponent reveals a card at random from their hand. Target creature gets +X/+X until end of turn, where X is the revealed card's mana value.

{3}{R}: Target opponent reveals a card at random from their hand. Planeswalker's Fury deals damage equal to that card's mana value to that player. Activate only as a sorcery.

{3}{W}: Target opponent reveals a card at random from their hand. You gain life equal to that card's mana value.

{3}{U}: Target opponent reveals a card at random from their hand. If it's an instant or sorcery card, exile it. You may cast it without paying its mana cost for as long as it remains exiled. At the beginning of the next end step, if you haven't cast it, return it to its owner's hand. Activate only as a sorcery.

{3}{B}: Target opponent reveals a card at random from their hand. Target creature gets -X/-X until end of turn, where X is the revealed card's mana value. Activate only as a sorcery.

At the beginning of your upkeep, destroy the creature with the least power. It can't be regenerated. If two or more creatures are tied for least power, you choose one of them.

When there are no creatures on the battlefield, sacrifice Porphyry Nodes.

{T}, Remove a counter from a permanent you control: Choose one --

• Put a charge counter on target artifact.

• Put a +1/+1 counter on target creature.

You may choose not to untap Preacher during your untap step.

{T}: For as long as Preacher remains tapped, gain control of target creature of an opponent's choice they control.

When Proft's Eidetic Memory enters the battlefield, draw a card.

You have no maximum hand size.

At the beginning of combat on your turn, if you've drawn more than one card this turn, put X +1/+1 counters on target creature you control, where X is the number of cards you've drawn this turn minus one.

{2}{U}, {T}: Put target creature on the bottom of its owner's library. That creature's controller reveals cards from the top of their library until they reveal a creature card. The player puts that card onto the battlefield and the rest on the bottom of their library in any order. Activate only as a sorcery.

Whenever a nontoken creature is put into your graveyard from the battlefield, exile that card.

At the beginning of your upkeep, you may pay {4} and 2 life. If you do, return a card exiled with Purgatory to the battlefield.

Whenever a creature you control becomes tapped, you may put a quest counter on Quest for Renewal.

As long as there are four or more quest counters on Quest for Renewal, untap all creatures you control during each other player's untap step.

Flash

Enchant creature

Whenever enchanted creature is dealt damage, its controller loses that much life.

If a spell or ability would cause its controller to gain life, that player loses that much life instead.

Discard X cards, then return a card from your graveyard to your hand for each card discarded this way. Exile Recall.

Exile target nonland card in a graveyard that was put there from anywhere this turn. Copy it. You may cast the copy without paying its mana cost.

Haste

Whenever Relic Robber deals combat damage to a player, that player creates a 0/1 colorless Goblin Construct artifact creature token with "This creature can't block" and "At the beginning of your upkeep, this creature deals 1 damage to you."

Whenever a nontoken creature you control dies, you may search your library for a card with the same name as that creature, reveal it, put it into your hand, then shuffle.

Sacrifice any number of artifacts, creatures, and/or lands. Draw a card for each permanent sacrificed this way.

Reveal a card in your hand, then put that card onto the battlefield if it has the same name as a permanent.

Whenever you activate an ability, if it isn't a mana ability, you may pay {2}. If you do, copy that ability. You may choose new targets for the copy.

{T}: Add {C}.

{1}, {T}: Tap target land.

Vigilance, trample

{2}, {T}: Exile another target creature. Return that card to the battlefield under its owner's control at the beginning of the next end step.

Each player skips their untap step.

At the beginning of each player's upkeep, that player simultaneously untaps each tapped artifact, creature, and land they control and taps each untapped artifact, creature, and land they control.

When Search the City enters the battlefield, exile the top five cards of your library.

Whenever you play a card with the same name as one of the exiled cards, you may put one of those cards with that name into its owner's hand. Then if there are no cards exiled with Search the City, sacrifice it. If you do, take an extra turn after this one.

Search your library for a Plains card, an Island card, a Swamp card, and a Mountain card. Reveal those cards, put them into your hand, then shuffle.

Defender

Whenever Shield Sphere blocks, put a -0/-1 counter on it.

Changeling (This card is every creature type.)

Creatures target player controls get +0/+1 and gain all creature types until end of turn.

For each of up to X target creatures, create a red Aura enchantment token named Smoke Blessing attached to that creature. Those tokens have enchant creature and "When enchanted creature dies, it deals 1 damage to its controller and you create a Treasure token."

At the beginning of your upkeep, if there are no Reflection tokens on the battlefield, create a 2/2 white Reflection creature token.

{0}: Destroy target Reflection.

Choose a creature type other than Wall. Each creature becomes that type until end of turn.

{1}, {T}: End the turn. Activate only during your turn. (Exile all spells and abilities from the stack. Discard down to your maximum hand size. Damage wears off, and "this turn" and "until end of turn" effects end.)

Prevent all combat damage that would be dealt this turn.

Each attacking creature doesn't untap during its controller's next untap step.

When Thornmantle Striker enters the battlefield, choose one --

• Remove X counters from target permanent, where X is the number of Elves you control.

• Target creature an opponent controls gets -X/-X until end of turn, where X is the number of Elves you control.

You may activate abilities of creatures you control as though those creatures had haste.

{1}, {T}: Untap target creature.

Whenever one or more cards leave your graveyard, create a tapped 2/2 black Zombie creature token.

Partner (You can have two commanders if both have partner.)

Whenever you cast an instant or sorcery spell, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.")

Activated abilities of creatures you control cost {2} less to activate. This effect can't reduce the mana in that cost to less than one mana.

Transmogrifying Wand enters the battlefield with three charge counters on it.

{1}, {T}, Remove a charge counter from Transmogrifying Wand: Destroy target creature. Its controller creates a 2/4 white Ox creature token. Activate only as a sorcery.

{T}: Target unblocked attacking creature becomes blocked. Activate only during combat after blockers are declared. (This ability works on creatures that can't be blocked.)

Choose one --

• Target creature gains flying until end of turn.

• Target creature becomes the creature type of your choice until end of turn.

• Look at the top four cards of your library, then put them back in any order.

At the beginning of each player's upkeep, that player may pay 2 life. If they don't, they return a permanent they control to its owner's hand.

{1}: Choose a creature type other than Wall. Target creature becomes that type until end of turn.

Target opponent sacrifices a creature for each creature put into your graveyard from the battlefield this turn.

{2}{B}, {T}, Discard a card: Each other player loses 2 life. You gain life equal to the life lost this way.

Whenever another artifact or creature you control is put into a graveyard from the battlefield, put an oil counter on Vat of Rebirth.

{2}{B}, {T}, Remove four oil counters from Vat of Rebirth: Return target creature card from your graveyard to the battlefield. Activate only as a sorcery.

You may choose not to untap Vedalken Shackles during your untap step.

{2}, {T}: Gain control of target creature with power less than or equal to the number of Islands you control for as long as Vedalken Shackles remains tapped.

{1}, Sacrifice Vial of Poison: Target creature gains deathtouch until end of turn. (Any amount of damage it deals to a creature is enough to destroy it.)

{T}: Whipkeeper deals damage to target creature equal to the damage already dealt to it this turn.

{2}{B}, {T}: Destroy target creature that was dealt damage this turn.

{1}: Exile target card from a graveyard.

{1}: The next time you would draw a card this turn, each player returns a permanent they control to its owner's hand instead.

Players play with their hands revealed.

If a player would draw a card, they reveal it instead. Then any other player may pay 2 life. If a player does, put that card into its owner's graveyard. Otherwise, that player draws a card.