At the beginning of your end step, if this creature didn't attack or come under your control this turn, sacrifice it.

Each player sacrifices a land of their choice.

This creature can't be blocked.
, Discard a card: Return this creature to its owner's hand.

Whenever this creature is dealt damage, you lose that much life.

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)
Threshold — As long as there are seven or more cards in your graveyard, this creature gets +2/+2 and can't block.

Return target creature card from your graveyard to your hand.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Discard any number of cards. Search your library for up to that many basic land cards, reveal them, put them into your hand, then shuffle.

Enchant creature
Enchanted creature has first strike.
Threshold — Enchanted creature gets +3/+0 as long as there are seven or more cards in your graveyard.

Enchant creature
Enchanted creature has ": This creature deals 1 damage to any target."

Prevent all combat damage that would be dealt this turn.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Defender (This creature can't attack.)
Flying

Enchant creature
Enchanted creature doesn't untap during its controller's untap step.
Enchanted creature has ", Discard a card: Untap this creature."

Discard a card: This creature gains first strike until end of turn.

Discard a card: This creature gets +1/+1 and becomes the color of your choice until end of turn.

You draw two cards, then each other player draws a card.

Target creature you control gains protection from the color of your choice until end of turn.
Draw a card.

: Add .
Threshold — This creature gets +3/+3 as long as there are seven or more cards in your graveyard.

Discard any number of cards. Counter target spell unless its controller pays for each card discarded this way.

Flying
, Sacrifice a land: Draw a card.

Return up to X target creatures to their owners' hands, where X is one plus the number of cards named Aether Burst in all graveyards as you cast this spell.

Sacrifice this creature: Exile target card from a graveyard.

When this creature attacks or blocks, return it to its owner's hand at end of combat. (Return it only if it's on the battlefield.)

Threshold — This creature has flying as long as there are seven or more cards in your graveyard.

Target player gains 4 life, then gains 4 life for each card named Life Burst in each graveyard.

Target player discards X cards, where X is one plus the number of cards named Mind Burst in all graveyards.

Target creature gets +X/+X until end of turn, where X is 3 plus the number of cards named Muscle Burst in all graveyards.

Flame Burst deals X damage to any target, where X is 2 plus the number of cards named Flame Burst in all graveyards.

Prevent the next 4 damage that would be dealt this turn to any number of targets, divided as you choose.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

All creatures gain menace until end of turn. (They can't be blocked except by two or more creatures.)
Threshold — If there are seven or more cards in your graveyard, creatures can't block this turn.

Discard any number of cards. Target player reveals their hand, then you choose a nonland card from it for each card discarded this way. That player discards those cards.

: Target player draws a card, then discards a card.

, Sacrifice this creature: It deals 2 damage to target creature.

, Discard a card: This creature gains flying until end of turn.

Discard a card, Sacrifice this creature: Add .

This creature can't attack or block alone.

Regenerate target creature.
Draw a card.