Flying
Revenant's power and toughness are each equal to the number of creature cards in your graveyard.

Hunters for Hire — Whenever a creature you control deals combat damage to a player, put a quest counter on it.
, Remove a quest counter from a permanent you control: Create a Junk token. (It's an artifact with ", Sacrifice this token: Exile the top card of your library. You may play that card this turn. Activate only as a sorcery.")

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Gain control of target creature until end of turn. Untap that creature and roll a six-sided die. Until end of turn, it gains haste and gets +X/+0, where X is the result.

Enchant creature
Enchanted creature gets +2/-2.

As an additional cost to cast this spell, exile an instant or sorcery card from your graveyard.
Draconic Intervention deals X damage to each non-Dragon creature, where X is the exiled card's mana value. If a creature dealt damage this way would die this turn, exile it instead.
Exile Draconic Intervention.

Kicker (You may pay an additional as you cast this spell.)
Flying, defender
If this creature was kicked, it enters with two +1/+1 counters on it.
As long as this creature has a +1/+1 counter on it, it can attack as though it didn't have defender.

At the beginning of combat on your turn, target artifact creature you control gets +2/+2 and gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.)

As an additional cost to cast this spell, sacrifice a creature.
Fiery Conclusion deals 5 damage to target creature.

All creatures get +2/+2.
Whenever chaos ensues, you may add .

Flying
Whirlwind — When this creature enters, return up to one other target creature to its owner's hand.

When this creature enters, you gain 3 life.

Target opponent reveals their hand. You choose a nonland card from it and exile that card.

When this creature blocks a creature, destroy that creature and this creature.

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Flying, vigilance
When this creature enters, return to your hand all cards in your graveyard that were put there from the battlefield this turn.
Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

Flying (This creature can't be blocked except by creatures with flying or reach.)
Nightmare's power and toughness are each equal to the number of Swamps you control.

If was spent to cast this spell, return up to one target creature to its owner's hand. If was spent to cast this spell, target player reveals their hand, you choose a nonland card from it, then that player discards that card. (Do both if was spent.)

Kicker and/or (You may pay an additional and/or as you cast this spell.)
When this creature enters, if it was kicked with its kicker, it deals 2 damage to any target.
When this creature enters, if it was kicked with its kicker, destroy target artifact.