Flying
When this creature enters, target player loses 3 life.
When this creature leaves the battlefield, that player gains 3 life.

Discard a card: This creature gains flying until end of turn.
Threshold — As long as there are seven or more cards in your graveyard, this creature gets +1/+1 and can't block.

: Untap target land.
Threshold — : Untap up to three target lands. Activate only if there are seven or more cards in your graveyard.

Add .
Threshold — Add instead if there are seven or more cards in your graveyard.

Return target creature and target land to their owners' hands.

As an additional cost to cast this spell, discard a card.
Target creature gets -5/-5 until end of turn.

When this creature enters, target opponent reveals their hand and you choose a nonland card from it. Exile that card.
When this creature leaves the battlefield, return the exiled card to its owner's hand.

Discard a card: Switch this creature's power and toughness until end of turn.

Destroy target land.
Threshold — If there are seven or more cards in your graveyard, instead destroy that land and Rancid Earth deals 1 damage to each creature and each player.

Enchant creature
Enchanted creature gets +1/+0.
Sacrifice this Aura: It deals 1 damage to target creature.

Kamahl's Sledge deals 4 damage to target creature.
Threshold — If there are seven or more cards in your graveyard, instead Kamahl's Sledge deals 4 damage to that creature and 4 damage to that creature's controller.

Whenever this creature attacks or blocks, any player may exile a card from their graveyard. If a player does, this creature assigns no combat damage this turn.

As an additional cost to cast this spell, discard X cards.
Return X target creature cards from your graveyard to your hand.

, Sacrifice this creature: Target black creature gets +1/+0 and gains first strike until end of turn.

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)
: Target black creature gets -2/-0 until end of turn.

As an additional cost to cast this spell, discard a card at random.
Sonic Seizure deals 3 damage to any target.

When this creature enters, you gain 4 life.

When this creature enters, exile another target creature.
When this creature leaves the battlefield, return the exiled card to the battlefield under its owner's control.

Draw a card.
Madness (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Enchant green or white creature
Enchanted creature has "At the beginning of your upkeep, sacrifice this creature unless you discard a card."

: This creature gets +2/+2 until end of turn. Activate only once each turn.
Madness (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Create two 1/1 green Squirrel creature tokens.
Flashback—, Pay 3 life. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Counter target spell with mana value 3 or less. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.

, , Sacrifice this creature: Destroy target enchantment.
Threshold — This creature gets +1/+1 as long as there are seven or more cards in your graveyard.

Target player draws two cards.
Flashback—, Pay 3 life. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Psychotic Haze deals 1 damage to each creature and each player.
Madness (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

, , Exile two cards from your graveyard: Return target creature card from your graveyard to your hand.

You gain life equal to the number of creature cards in all graveyards.

Whenever this creature becomes the target of a spell or ability, mill two cards.

Tap target untapped creature you control. If you do, it deals damage equal to its power to target attacking or blocking creature an opponent controls.
Flashback—, Pay 3 life. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

, : Target creature gets -1/-1 until end of turn.
Threshold — , : Target creature gets -2/-2 until end of turn. Activate only if there are seven or more cards in your graveyard.

Flying
, Discard a card: This creature gets +1/+2 until end of turn.

Enchant creature
Enchanted creature gets +1/+1 and has flying.
Discard a card: Return enchanted creature to its owner's hand.

Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.
Threshold — If there are seven or more cards in your graveyard, instead search your library for up to three basic land cards, put them onto the battlefield tapped, then shuffle.

Green creatures and white creatures can't block this turn.
Flashback—, Pay 3 life. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Target creature gains haste until end of turn.
Draw a card.