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When this creature enters, sacrifice another creature. You gain X life and draw X cards, where X is that creature's power.

Each player sacrifices two creatures of their choice.

Creatures you control get +2/+2 until end of turn. Reinforce X—{X}{W}{W} ({X}{W}{W}, Discard this card: Put X +1/+1 counters on target creature.)

Flying When this creature enters, creatures your opponents control get -2/-2 until end of turn. Unearth {3}{B}{B} ({3}{B}{B}: Return this card from...

Haste {1}: Another target creature with power 2 or less can't be blocked this turn. {1}{R}, {T}, Discard your hand: Until end of turn, whenever a c...

Morph {3}{B} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) When this creature is turne...

When this creature enters, if you cast it from your hand, return all permanents to their owners' hands except for Giants, Wizards, and lands.

Create X 1/1 red Elemental Cat creature tokens with haste. Exile them at the beginning of the next end step. Flashback—{R}{R}, Sacrifice X Mountain...

Create two 1/1 white Bird creature tokens with flying. Flashback—Tap three untapped white creatures you control. (You may cast this card from your ...

Constellation — Whenever this creature or another enchantment you control enters, creatures your opponents control get -1/-1 until end of turn.

Indestructible As long as your devotion to white and black is less than seven, Athreos isn't a creature. Whenever another creature you own dies, re...

Flash Enchant creature Enchanted creature gets -2/-0 and loses all abilities. (Mutating onto the creature won't give it new abilities. It can gain ...

At the beginning of combat on your turn, you may exile a creature card from your graveyard. If you do, create a token that's a copy of that card, e...

{1}, Sacrifice a creature: Target player reveals cards from the top of their library until they reveal a land card, then puts those cards into thei...

At the beginning of the end step, if you control four or more creatures named Biovisionary, you win the game.

Flying, hexproof Whenever a Dragon you control attacks, creatures defending player controls get -1/-1 until end of turn.

Whenever this creature attacks, defending player chooses an untapped creature they control. That creature blocks this creature this turn if able.

When Gadwick enters, draw X cards. Whenever you cast a blue spell, tap target nonland permanent an opponent controls.

Flash When this creature enters, tap target creature an opponent controls. It loses all abilities until end of turn.

At the beginning of each combat, creatures you control gain first strike until end of turn if a creature you control has first strike. The same is ...

Flying When this creature enters, create two 1/1 green and blue Snake creature tokens. When this creature enters, sacrifice it unless {U} was spent...

Cumulative upkeep {W} or {U} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep co...

When this creature enters, bolster 2. (Choose a creature with the least toughness among creatures you control and put two +1/+1 counters on it.) Wh...

Exile the top three cards of your library. Until the end of your next turn, you may play those cards. Create three Treasure tokens. (They're artifa...