Target player mills half their library, rounded down.

Flying
, : This creature deals 2 damage to target attacking or blocking creature.

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

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.

, Exile a card from your graveyard: This enchantment deals 1 damage to each creature and each player.

Create a 4/4 green Beast creature token.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

When this creature enters, you may return target sorcery card from your graveyard to your hand.

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

When this creature enters, you may return target instant card from your graveyard to your hand.

Thermal Blast deals 3 damage to target creature.
Threshold — Thermal Blast deals 5 damage instead if there are seven or more cards in your graveyard.

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.

Counter target spell.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Threshold — This creature gets +4/+4 as long as there are seven or more cards in your graveyard.

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.

, Exile two cards from your graveyard and this creature: Destroy target nonblack creature. It can't be regenerated.

Flying
Discard a card: This creature gets +4/+4 until end of turn. Activate only once each turn.

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.

Target player draws cards equal to the number of cards in their hand, then discards that many cards.

Whenever this creature becomes blocked, it gets +2/+2 until end of turn for each creature blocking it.

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.

Exile target attacking creature.
Draw a card.

Shower of Coals deals 2 damage to each of up to three targets.
Threshold — Shower of Coals deals 4 damage to each of those permanents and/or players instead if there are seven or more cards in your graveyard.

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."

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

, Discard a card: This creature gains fear until end of turn. (It can't be blocked except by artifact creatures and/or black creatures.)

, 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.

Return all permanents to their owners' hands.

As an additional cost to cast this spell, choose a number between 0 and 5.
Liquid Fire deals X damage to target creature and 5 minus X damage to that creature's controller, where X is the chosen number.

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

Morbid Hunger deals 3 damage to any target. You gain 3 life.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Enchant land
Enchanted land has ": Target player loses 3 life."

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

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.

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.)

, Discard a card: This creature gains trample until end of turn.
Threshold — As long as there are seven or more cards in your graveyard, this creature gets +2/+2 and has shroud. (It can't be the target of spells or abilities.)

, Sacrifice this creature: Target player draws a card.