As an additional cost to cast this spell, sacrifice a blue permanent.

Counter target spell.

Green legendary creatures you control have "bands with other legendary creatures." (Any legendary creatures can attack in a band as long as at least one has "bands with other legendary creatures." Bands are blocked as a group. If at least two legendary creatures you control, one of which has "bands with other legendary creatures," are blocking or being blocked by the same creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

As An-Zerrin Ruins enters the battlefield, choose a creature type.

Creatures of the chosen type don't untap during their controllers' untap steps.

Counter target spell. Its controller may draw up to two cards at the beginning of the next turn's upkeep.

You draw a card at the beginning of the next turn's upkeep.

Each player can't cast more than one spell each turn.

Legendary creatures don't untap during their controllers' untap steps.

When Arena of the Ancients enters the battlefield, tap all legendary creatures.

Target creature gets +1/+1 and gains double strike until end of turn.

Fuse (You may cast one or both halves of this card from your hand.)

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All creatures able to block target creature this turn do so.

Fuse (You may cast one or both halves of this card from your hand.)

Azorius Chancery enters the battlefield tapped.

When Azorius Chancery enters the battlefield, return a land you control to its owner's hand.

{T}: Add {W}{U}.

{2}: Target creature gains banding until end of turn. (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding a player controls are blocking or being blocked by a creature, that player divides that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

Noncreature spells you cast cost {2} less to cast.

Whenever you cast a noncreature spell, counter that spell unless you sacrifice a creature.

Prevent all damage that would be dealt to creatures.

Creatures with flying can block only creatures with flying.

Creatures without flying have reach. (They can block creatures with flying.)

At the beginning of each player's end step, Citadel of Pain deals X damage to that player, where X is the number of untapped lands they control.

Whenever another permanent you control becomes the target of a spell or ability an opponent controls, you may return that permanent to its owner's hand.

Sacrifice Composite Golem: Add {W}{U}{B}{R}{G}.

{1}{U}, Discard a card: Draw a card.

{1}{U}, Sacrifice Compulsion: Draw a card.

At the beginning of your upkeep, sacrifice Contamination unless you sacrifice a creature.

If a land is tapped for mana, it produces {B} instead of any other type and amount.

Nonwhite creatures with power 3 or greater don't untap during their controllers' untap steps.

All creatures are black.

Flying

When Deathbringer Regent enters the battlefield, if you cast it from your hand and there are five or more other creatures on the battlefield, destroy all other creatures.

Search your library for a card, exile it, then shuffle. Any opponent may have you put that card into your hand. If no player does, you draw three cards.

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.

Whenever Diviner Spirit deals combat damage to a player, you and that player each draw that many cards.

Separate all creatures target player controls into two piles. Destroy all creatures in the pile of that player's choice. They can't be regenerated.

{2}{U}, {T}, Discard a card, Sacrifice a land: Search your library for up to two basic land cards, put them onto the battlefield, then shuffle.

Each creature has protection from its colors.

Each creature has "When this creature dies, choose target opponent. That player puts this card from its owner's graveyard onto the battlefield under their control at the beginning of the next end step."

At the beginning of your upkeep, put three +1/+1 counters on target creature you control and three +1/+1 counters on target creature an opponent controls.

Whenever a source an opponent controls deals damage to you, if Farsight Mask is untapped, you may draw a card.

As an additional cost to cast this spell, pay X life.

Fire Covenant deals X damage divided as you choose among any number of target creatures.

{U}{U}: Tap target creature without flying.

Enchant creature

{U}: Tap enchanted creature.

{U}: Untap enchanted creature.

{3}{G}, {T}: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

{1}: Target creature you control has base power and toughness 7/7 until end of turn.

Flying

{2}{W}: Choose a color. Creatures you control gain protection from the chosen color until end of turn. Activate only if Glory is in your graveyard.

During your turn, your opponents can't cast spells or activate abilities of artifacts, creatures, or enchantments.

When Great Whale enters the battlefield, untap up to seven lands.

Counter target spell unless its controller exiles all cards from their graveyard.

Draw a card.

Reveal the cards in your library. An opponent chooses from among them a creature card, a land card, and a noncreature, nonland card. You put the chosen cards into your hand. Then shuffle.

Flying

Whenever a creature becomes the target of a spell or ability, destroy that creature.

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

{2}, Sacrifice a nontoken permanent: Draw a card.

Whenever a creature dies, you may pay {3}. If you do, draw a card.

Whenever an opponent casts a green spell, you draw a card.

Search your library for a snow land card, put it onto the battlefield tapped, then shuffle.

At the beginning of each player's end step, if no creatures attacked this turn, that player sacrifices a creature they controlled since the beginning of the turn.

Radiance -- Destroy target enchantment and each other enchantment that shares a color with it.

Whenever a creature enters the battlefield, destroy it.

{0}: Destroy Lethal Vapors. You skip your next turn. Any player may activate this ability.

You have no maximum hand size.

If an effect causes you to discard a card, discard it, but you may put it on top of your library instead of into your graveyard.

Attach target Equipment to target creature. (Control of the Equipment doesn't change.)

At the beginning of your end step, sacrifice Measure of Wickedness and you lose 8 life.

Whenever another card is put into your graveyard from anywhere, target opponent gains control of Measure of Wickedness.

Destroy each artifact with mana value X or less.

Each attacking creature gets +1/+0 until end of turn for each nonbasic land defending player controls.

Buyback {2} (You may pay an additional {2} as you cast this spell. If you do, put this card into your hand as it resolves.)

Scry 3. (Look at the top three cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)

Enchant creature or land

Enchanted permanent has "At the beginning of your end step, sacrifice this permanent and attach Nettlevine Blight to a creature or land you control."

At the beginning of each player's upkeep, return to its owner's hand each creature that player controls with power greater than the number of cards in their hand.

Whenever you attack with three or more creatures, draw a card.

Flying

When Palinchron enters the battlefield, untap up to seven lands.

{2}{U}{U}: Return Palinchron to its owner's hand.

All creatures have "At the beginning of your upkeep, sacrifice this creature unless you pay {1}."

Flying

When Peregrine Drake enters the battlefield, untap up to five lands.

{2}, {T}, Choose flying, first strike, trample, or shadow: Until end of turn, target creature with the chosen ability loses it and another target creature gains it.

Whenever a player casts a spell from their hand, that player exiles it, then exiles cards from the top of their library until they exile a card that shares a card type with it. That player may cast that card without paying its mana cost. Then they put all cards exiled with Possibility Storm on the bottom of their library in a random order.

Whenever a player casts an enchantment spell, counter it.

Reveal the first card you draw each turn. Whenever you reveal a creature card this way, draw a card.

Enchant opponent

Skip your draw step.

Whenever enchanted opponent draws a card, you may draw a card.

Whenever an opponent shuffles their library, you may look at the top two cards of that library. You may exile one of those cards. Then put the rest on top of that library in any order.

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.

Choose target instant or sorcery spell that targets only a single permanent or player. Copy that spell for each other permanent or player the spell could target. Each copy targets a different one of those permanents and players.

Target artifact, creature, or land phases out. (While it's phased out, it's treated as though it doesn't exist. It phases in before its controller untaps during their next untap step.)

Return up to X target cards from your graveyard to your hand, where X is the number of black permanents target opponent controls as you cast this spell.

{0}: Remove target attacking creature you control from combat and untap it.

{W}, Pay 2 life: The next time a source of your choice would deal damage to you this turn, prevent that damage.

As an additional cost to cast this spell, sacrifice a creature.

Gain control of target nonartifact, nonblack creature.

Kicker {7} (You may pay an additional {7} as you cast this spell.)

Search target player's library for up to three cards, exile them, then that player shuffles. If this spell was kicked, instead search that player's library for up to fifteen cards, exile them, then that player shuffles.

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.

Whenever you gain life, target opponent loses that much life.

Shadow (This creature can block or be blocked by only creatures with shadow.)

Whenever Soltari Visionary deals damage to a player, destroy target enchantment that player controls.

Whenever an opponent casts a creature spell, Soul Barrier deals 2 damage to that player unless they pay {2}.

{1}{W}, {T}: Target creature becomes an enchantment and loses all abilities until a player casts a creature spell.

Flying

Whenever Sphinx Ambassador deals combat damage to a player, search that player's library for a card, then that player chooses a card name. If you searched for a creature card that doesn't have that name, you may put it onto the battlefield under your control. Then that player shuffles.

{B}{B}, Pay 2 life, Sacrifice a Swamp: Return target creature card from your graveyard to the battlefield.

Until your next turn, your life total can't change and you gain protection from everything. All permanents you control phase out. (While they're phased out, they're treated as though they don't exist. They phase in before you untap during your untap step.)

Exile Teferi's Protection.

During your turn, spells your opponents cast cost {1} more to cast and abilities your opponents activate cost {1} more to activate unless they're mana abilities.

Afterlife 1 (When this creature dies, create a 1/1 white and black Spirit creature token with flying.)

Cumulative upkeep {1}{B} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

At the beginning of each upkeep, if Tombstone Stairwell is on the battlefield, each player creates a 2/2 black Zombie creature token with haste named Tombspawn for each creature card in their graveyard.

At the beginning of each end step or when Tombstone Stairwell leaves the battlefield, destroy all tokens created with Tombstone Stairwell. They can't be regenerated.

{T}: Add {C}.

{1}, {T}: Target creature gains protection from artifacts until end of turn.

Target opponent reveals their hand. You may put a creature card from it onto the battlefield under your control. That creature gains haste. Sacrifice it at the beginning of the next end step.

{T}: Untap another target permanent.

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

Enchant creature

{U}{U}: Enchanted creature phases out. (While it's phased out, it's treated as though it doesn't exist. It phases in before its controller untaps during their next untap step.)

{U}{U}, {T}: Target creature phases out. (While it's phased out, it's treated as though it doesn't exist. It phases in before its controller untaps during their next untap step.)

Defender (This creature can't attack.)

Pay 1 life: Wall of Blood gets +1/+1 until end of turn.

Each creature deals damage to itself equal to its power.

Enchant player

If a card would be put into enchanted player's graveyard from anywhere, instead that card is revealed and put on the bottom of that player's library.

Buyback {2} (You may pay an additional {2} as you cast this spell. If you do, put this card into your hand as it resolves.)

Change the text of target permanent by replacing all instances of one color word with another or one basic land type with another until end of turn. (For example, you may change "nonred creature" to "nongreen creature" or "plainswalk" to "swampwalk.")

Whenever a spell or ability causes its controller to shuffle their library, that player puts a card from their hand on top of their library.

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)

{T}: Add {B}{B}{B}{B}. Target opponent gains control of Witch Engine. (Activate only as an instant.)

As an additional cost to cast this spell, pay 3 life.

Counter target creature spell.

At the beginning of your upkeep, you may choose a card type. If you do, each player sacrifices a permanent of that type.