When Acererak the Archlich enters the battlefield, if you haven't completed Tomb of Annihilation, return Acererak the Archlich to its owner's hand and venture into the dungeon.

Whenever Acererak the Archlich attacks, for each opponent, you create a 2/2 black Zombie creature token unless that player sacrifices a creature.

When Aether Adept enters the battlefield, return target creature to its owner's hand.

Creatures you control have flying, first strike, vigilance, trample, haste, and protection from black and from red.

Alirios, Enraptured enters the battlefield tapped.

Alirios doesn't untap during your untap step if you control a Reflection.

When Alirios enters the battlefield, create a 3/2 blue Reflection creature token.

Any player may cast creature spells with mana value 3 or less without paying their mana costs and as though they had flash.

Sacrifice a creature: Add {C}{C}.

Flying, deathtouch

When Baleful Strix enters the battlefield, draw a card.

({T}: Add {B} or {G}.)

({T}: Add {G} or {U}.)

As Breeding Pool enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

{2}, {T}: Add {B} for each Swamp you control.

Flash

When Caller of the Claw enters the battlefield, create a 2/2 green Bear creature token for each nontoken creature put into your graveyard from the battlefield this turn.

Defender (This creature can't attack.)

When Carven Caryatid enters the battlefield, draw a card.

Devoid (This card has no color.)

When Catacomb Sifter enters the battlefield, create a 1/1 colorless Eldrazi Scion creature token. It has "Sacrifice this creature: Add {C}."

Whenever another creature you control dies, scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

Flying

When Cavern Harpy enters the battlefield, return a blue or black creature you control to its owner's hand.

Pay 1 life: Return Cavern Harpy to its owner's hand.

Flying

When Cloudkin Seer enters the battlefield, draw a card.

Whenever a nonartifact permanent enters the battlefield under your control, you may return another permanent you control that shares a permanent type with it to its owner's hand.

When Coiling Oracle enters the battlefield, reveal the top card of your library. If it's a land card, put it onto the battlefield. Otherwise, put that card into your hand.

All creatures have haste.

Defender (This creature can't attack.)

When Coral Barrier enters the battlefield, create a 1/1 blue Squid creature token with islandwalk. (It can't be blocked as long as defending player controls an Island.)

When Council of Advisors enters the battlefield, draw a card.

Search your library for a card, then shuffle and put that card on top. You lose 2 life.

Search your library for a card, put that card into your hand, then shuffle.

Search your library for a card, put that card into your hand, then shuffle.

If an effect would create one or more tokens under your control, it creates twice that many of those tokens instead.

If an effect would put one or more counters on a permanent you control, it puts twice that many of those counters on that permanent instead.

(Dryad Arbor isn't a spell, it's affected by summoning sickness, and it has "{T}: Add {G}.")

Tap an untapped creature you control: Untap target basic land.

Devoid (This card has no color.)

Flying

When Eldrazi Skyspawner enters the battlefield, create a 1/1 colorless Eldrazi Scion creature token. It has "Sacrifice this creature: Add {C}."

When Elvish Visionary enters the battlefield, draw a card.

When Endless Cockroaches dies, return it to its owner's hand.

When Ferocious Pup enters the battlefield, create a 2/2 green Wolf creature token.

({T}: Add {U} or {B}.)

Fetid Pools enters the battlefield tapped.

Cycling {2} ({2}, Discard this card: Draw a card.)

When Fierce Empath enters the battlefield, you may search your library for a creature card with mana value 6 or greater, reveal it, put it into your hand, then shuffle.

If you control a commander, you may cast this spell without paying its mana cost.

Counter target noncreature spell.

Exile a creature you control: Add X mana of any one color, where X is 1 plus the exiled creature's mana value. Spend this mana only to cast creature spells.

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

As Gilt-Leaf Palace enters the battlefield, you may reveal an Elf card from your hand. If you don't, Gilt-Leaf Palace enters the battlefield tapped.

{T}: Add {B} or {G}.

Search your library for a card, put that card into your hand, then shuffle. You lose 3 life.

Reveal a card from your hand. Search your library for a card with the same name as that card, reveal it, put it into your hand, then shuffle.

Hellbent -- If you have no cards in hand, instead search your library for a card, put it into your hand, then shuffle.

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

When Jungleborn Pioneer enters the battlefield, create a 1/1 blue Merfolk creature token with hexproof. (It can't be the target of spells or abilities your opponents control.)

If you would draw a card while your library has no cards in it, you win the game instead.

When Man-o'-War enters the battlefield, return target creature to its owner's hand.

Morphic Pool enters the battlefield tapped unless you have two or more opponents.

{T}: Add {U} or {B}.

When Mortus Strider dies, return it to its owner's hand.

When Mwonvuli Beast Tracker enters the battlefield, search your library for a creature card with deathtouch, hexproof, reach, or trample and reveal it. Shuffle and put that card on top.

Search your library for an instant or sorcery card, reveal it, then shuffle and put that card on top.

When Nest Invader enters the battlefield, create a 0/1 colorless Eldrazi Spawn creature token. It has "Sacrifice this creature: Add {C}."

Opulent Palace enters the battlefield tapped.

{T}: Add {B}, {G}, or {U}.

({T}: Add {B} or {G}.)

As Overgrown Tomb enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

When Ovinomancer enters the battlefield, sacrifice it unless you return three basic lands you control to their owner's hand.

{T}, Return Ovinomancer to its owner's hand: Destroy target creature. It can't be regenerated. That creature's controller creates a 0/1 green Sheep creature token.

If an artifact or creature entering the battlefield causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.

Flying

When Parasitic Strix enters the battlefield, if you control a black permanent, target player loses 2 life and you gain 2 life.

Search your library for a sorcery card, reveal it, then shuffle and put that card on top.

Sacrifice a creature: Add one mana of any color.

Suspend 2--{1}{B} (Rather than cast this card from your hand, pay {1}{B} and exile it with two time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, cast it without paying its mana cost.)

Search your library for a card, put that card into your hand, then shuffle.

Rejuvenating Springs enters the battlefield tapped unless you have two or more opponents.

{T}: Add {G} or {U}.

Whenever an opponent casts a spell, you may draw a card unless that player pays {1}.

Devoid (This card has no color.)

When Scion Summoner enters the battlefield, create a 1/1 colorless Eldrazi Scion creature token. It has "Sacrifice this creature: Add {C}." ({C} represents colorless mana.)

When Spellseeker enters the battlefield, you may search your library for an instant or sorcery card with mana value 2 or less, reveal it, put it into your hand, then shuffle.

Counter target activated or triggered ability. (Mana abilities can't be targeted.)

({T}: Add {U} or {B}.)

Sunken Hollow enters the battlefield tapped unless you control two or more basic lands.

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

Counter target enchantment, instant, or sorcery spell. Its controller creates a 2/2 blue Bird creature token with flying.

Search your library for a creature card, reveal it, then shuffle and put that card on top.

+2: Create two 0/1 black Thrull creature tokens.

+1: You may sacrifice another creature or planeswalker. If you do, draw two cards, then draw another card if the sacrificed permanent was a commander.

-10: Gain control of all commanders. Put all commanders from the command zone onto the battlefield under your control.

Tevesh Szat, Doom of Fools can be your commander.

Partner

{4}: Scry 1, then reveal the top card of your library. If it's a land card, put it onto the battlefield tapped. Otherwise, draw a card.

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

When Treasure Mage enters the battlefield, you may search your library for an artifact card with mana value 6 or greater, reveal it, put it into your hand, then shuffle.

When Tribute Mage enters the battlefield, you may search your library for an artifact card with mana value 2, reveal that card, put it into your hand, then shuffle.

When Trinket Mage enters the battlefield, you may search your library for an artifact card with mana value 1 or less, reveal that card, put it into your hand, then shuffle.

When Trophy Mage enters the battlefield, you may search your library for an artifact card with mana value 3, reveal it, put it into your hand, then shuffle.

({T}: Add {G} or {U}.)

Reach

When Twin-Silk Spider enters the battlefield, create a 1/2 green Spider creature token with reach.

Partner with Cazur, Ruthless Stalker (When this creature enters the battlefield, target player may put Cazur into their hand from their library, then shuffle.)

Ukkima, Stalking Shadow can't be blocked.

When Ukkima leaves the battlefield, it deals X damage to target player and you gain X life, where X is its power.

({T}: Add {U} or {B}.)

Undergrowth Stadium enters the battlefield tapped unless you have two or more opponents.

{T}: Add {B} or {G}.

Each land is a Swamp in addition to its other land types.

Search your library for a card, then shuffle and put that card on top. You lose 2 life.

Flash (You may cast this spell any time you could cast an instant.)

When Vedalken Aethermage enters the battlefield, return target Sliver to its owner's hand.

Wizardcycling {3} ({3}, Discard this card: Search your library for a Wizard card, reveal it, put it into your hand, then shuffle.)

({T}: Add {U} or {B}.)

As Watery Grave enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

When Woe Strider enters the battlefield, create a 0/1 white Goat creature token.

Sacrifice another creature: Scry 1.

Escape--{3}{B}{B}, Exile four other cards from your graveyard. (You may cast this card from your graveyard for its escape cost.)

Woe Strider escapes with two +1/+1 counters on it.

Search your library for a creature card, reveal it, then shuffle and put the card on top.

When Yavimaya Sapherd enters the battlefield, create a 1/1 green Saproling creature token.

({T}: Add {B}, {G}, or {U}.)

Zagoth Triome enters the battlefield tapped.

Cycling {3} ({3}, Discard this card: Draw a card.)