This creature enters with three +1/+1 counters on it.
At the beginning of your upkeep, sacrifice this creature unless you remove a +1/+1 counter from it.
, Discard a card: Put a +1/+1 counter on this creature.

Haste (This creature can attack and as soon as it comes under your control.)
Magnivore's power and toughness are each equal to the number of sorcery cards in all graveyards.

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

Protection from black
Threshold — As long as there are seven or more cards in your graveyard, this creature gets +3/+3 and has flying.

This creature can't be blocked by Walls.
Threshold — As long as there are seven or more cards in your graveyard, this creature gets +3/+0 and attacks each combat if able.

, : Reveal the top card of your library. If it's a creature card, put it onto the battlefield. Otherwise, put it into your graveyard.

Destroy target artifact, target creature, target enchantment, and target land. (You can't cast this spell unless you have legal choices for all its targets.)

Whenever a green nontoken creature dies, that creature's controller may search their library for a card with the same name as that creature, put it onto the battlefield, then shuffle.

Whenever you cast an instant or sorcery spell, you may pay . If you do, copy that spell. You may choose new targets for the copy.

Exile all cards from target player's graveyard other than basic land cards. For each card exiled this way, search that player's library for all cards with the same name as that card and exile them. Then that player shuffles.

Flying
Whenever this creature becomes the target of a spell or ability, sacrifice it unless you discard a land card.

Trample
This creature enters with seven +1/+1 counters on it.
Whenever you tap a land for mana, remove a +1/+1 counter from this creature.

Whenever a creature dies, that creature's controller sacrifices a land of their choice.

Target player sacrifices a land of their choice.
Threshold — Each player sacrifices all lands they control instead if there are seven or more cards in your graveyard.

Enchant creature (Target a creature as you cast this. This card enters attached to that creature.)
You control enchanted creature.

Target player mills half their library, rounded down.

Enchant creature
At the beginning of each upkeep, put a plague counter on this Aura.
Enchanted creature gets -1/-1 for each plague counter on this Aura.
When enchanted creature leaves the battlefield, that creature's controller returns this Aura from its owner's graveyard to the battlefield.

Flying
Whenever a creature dealt damage by this creature this turn dies, put a +1/+1 counter on this creature.
Threshold — As long as there are seven or more cards in your graveyard, this creature is white and has ": Destroy target black creature."

Sacrifice an Atog creature: Atogatog gets +X/+X until end of turn, where X is the sacrificed creature's power.

At the beginning of your upkeep, if you have 200 or more cards in your library, you win the game.

Flying
, Discard a card: This creature gets +2/+2 until end of turn.

, Sacrifice a creature: Target creature gets -2/-2 until end of turn.
, Exile a creature card from your graveyard: Target creature gets -2/-2 until end of turn.

Tap an untapped Octopus you control: Tap target permanent.
: Tap all creatures without flying.

Choose any number of creatures target player controls. Choose the same number of creatures another target player controls. Those players exchange control of those creatures. (This effect lasts indefinitely.)

At the beginning of your upkeep, you may create a 1/1 green Squirrel creature token.
Threshold — All Squirrels get +2/+2 as long as there are seven or more cards in your graveyard.

Haste (This creature can attack and as soon as it comes under your control.)
: Kamahl deals 3 damage to any target.

Flying, vigilance
Threshold — As long as there are seven or more cards in your graveyard, this creature gets +3/+3, is black, has trample, and has "At the beginning of your upkeep, sacrifice a creature."

Return all permanents to their owners' hands.

Destroy all creatures. They can't be regenerated.
Threshold — If there are seven or more cards in your graveyard, instead destroy all creatures, then create two 1/1 white Spirit creature tokens with flying. Creatures destroyed this way can't be regenerated.

Whenever this creature deals combat damage to a creature, destroy that creature at end of combat.
Threshold — As long as there are seven or more cards in your graveyard, all creatures able to block this creature do so.

You gain 2 life for each card in your graveyard.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Flying
, Discard a card: Return this creature to its owner's hand.

Flying, protection from each color

: This creature deals 1 damage to each creature without flying.

Flying
Cognivore's power and toughness are each equal to the number of instant cards in all graveyards.

Flying
Whenever a creature dealt damage by this creature this turn dies, put a +1/+1 counter on this creature.
: This creature deals 1 damage to target creature.