, : Roll a d20 and subtract the number of cards in your hand. If the result is 0 or less, discard your hand.
1—9 | Return a card at random from your graveyard to your hand.
10—19 | Draw two cards.
20 | Put a creature card from any graveyard onto the battlefield under your control. When that creature dies, its owner loses the game.

Whenever one or more nontoken Villains you control attack a player, you create a 2/1 black Villain creature token with menace. (It can't be blocked except by two or more creatures.)

Whenever an opponent discards a card, that player loses 2 life.

Toxic 1 (Players dealt combat damage by this creature also get a poison counter.)
Whenever a creature you control becomes the target of a spell, target opponent gets a poison counter.

Counter target spell unless its controller pays . Clash with an opponent. If you win, that spell's controller mills four cards. (Each clashing player reveals the top card of their library, then puts that card on their choice of the top or bottom. A player wins if their card had a greater mana value.)

Equipped creature gets +2/+2 and has protection from blue and from black.
Whenever equipped creature deals combat damage to a player, surveil 2. Then you may cast an instant or sorcery spell with mana value 2 or less from your graveyard without paying its mana cost. If that spell would be put into your graveyard, exile it instead.
Equip

For each creature, its controller sacrifices it unless they pay X life.

At the beginning of each player's upkeep, that player sacrifices an artifact, creature, or land of their choice.

Flying
When this creature enters, create a Food token. (It's an artifact with ", , Sacrifice this token: You gain 3 life.")
, : Create a Food token.
, Sacrifice a Food: Add one mana of any color.

As this creature enters or is turned face up, you may choose another creature on the battlefield. If you do, until this creature is turned face down, it becomes a copy of that creature, except it has "At the beginning of your upkeep, you may turn this creature face down."
Morph

This spell costs less to cast, where X is the total mana value of Dragons you control.
Flying, trample
, Sacrifice a land: Return this card from your graveyard to your hand.

As an additional cost to cast this spell, reveal a Merfolk card from your hand or pay .
When this creature enters, draw a card.

When Rosie Cotton enters, create a Food token. (It's an artifact with ", , Sacrifice this token: You gain 3 life.")
Whenever you create a token, put a +1/+1 counter on target creature you control other than Rosie Cotton.

Other Goblins you control get +1/+1.
Whenever this creature or another Goblin you control dies, exile the top card of your library. If it's a Goblin creature card, you may cast that card until the end of your next turn.

Deathtouch
Whenever Grist or another creature you control enters, if it entered from your graveyard or you cast it from your graveyard, you may pay . If you do, exile Grist, then return it to the battlefield transformed under its owner's control.

This creature can't be blocked.
Megamorph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.)

Reach
Whenever Six attacks, mill three cards. You may put a land card from among them into your hand.
During your turn, nonland permanent cards in your graveyard have retrace. (You may cast permanent cards from your graveyard by discarding a land card in addition to paying their other costs.)

Allies — At the beginning of your end step, put a +1/+1 counter on each of up to two other target legendary creatures.
Betrayal — Whenever a legendary creature with counters on it dies, draw a card for each counter on it. You lose 2 life.

Sacrifice a creature: Draw cards equal to the sacrificed creature's power, then discard three cards.