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

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.

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

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 (This creature can't be blocked except by creatures with flying or reach.)
: Target player reveals the top card of their library.

, Discard a card at random: This creature gets +3/+0 until end of turn.

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.

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

Trample
This creature gets +4/+4 as long as there are no cards in your graveyard.

Flying (This creature can't be blocked except by creatures with flying or reach.)
: This creature gets +0/+1 until end of turn.

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

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 +4/+4 until end of turn. Activate only once each turn.

Exile target attacking creature.
Draw a card.

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

Discard a card at random: This creature gains first strike and haste until end of turn.

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

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

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.

, 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.)

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."

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.)

, Sacrifice this creature: Target player draws a card.

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.

Return all permanents to their owners' hands.

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