Until end of turn, target creature gains "When this creature dies, return it to the battlefield tapped under its owner's control with a +1/+1 counter on it."

Vigilance
: Put a +1/+1 counter on this creature.

Up to two target creatures can't block this turn.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Enchant creature
Enchanted creature has "Whenever a creature you control enters, this creature gets +1/+1 until end of turn."
When this Aura enters, create a 1/1 white Spirit creature token with flying.

Whenever another creature you control dies, put a +1/+1 counter on this creature.

Tap three untapped creatures you control: Each opponent loses 1 life.

Exploit (When this creature enters, you may sacrifice a creature.)
When this creature exploits a creature, each opponent exiles a card from their hand.

Whenever another Human you control enters, this creature gets +1/+1 until end of turn.

Flying
This creature can't block.

Enchant creature
When this Aura enters, mill two cards. (Put the top two cards of your library into your graveyard.)
Enchanted creature gets -X/-0, where X is the number of cards in your graveyard.

Target player loses 2 life and you gain 2 life. Create two Blood tokens. (They're artifacts with ", , Discard a card, Sacrifice this token: Draw a card.")

Destroy target creature with flying.

Whenever you cast a noncreature spell, this creature deals 1 damage to each opponent.

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

Return target nonland permanent to its owner's hand. If you controlled that permanent, draw a card.

Whenever this creature attacks, it deals 1 damage to defending player.

Coven — Choose target creature you control and target creature you don't control. If you control three or more creatures with different powers, put a +1/+1 counter on the chosen creature you control. Then the chosen creatures fight each other. (Each deals damage equal to its power to the other.)

Coven — At the beginning of combat on your turn, if you control three or more creatures with different powers, this creature gains flying until end of turn.

Target creature gets -2/-2 until end of turn. If it's night, that creature gets -13/-13 until end of turn instead.

Whenever this creature deals damage to a Vampire, destroy that creature.

When this creature enters, draw a card, then discard a card.
Whenever you discard a Spirit card or a card with disturb, put a +1/+1 counter on this creature.

Flash
Enchant creature you control
When this Aura enters, enchanted creature gains hexproof until end of turn. (It can't be the target of spells or abilities your opponents control.)
Enchanted creature gets +1/+1.

Disturb (You may cast this card from your graveyard transformed for its disturb cost.)

Whenever you cast an instant or sorcery spell, this creature gets +2/+0 until end of turn.

Target creature gets -2/-0 until end of turn. Create a 2/2 black Zombie creature token with decayed. (It can't block. When it attacks, sacrifice it at end of combat.)
Draw a card.

Choose one —
• Destroy target artifact.
• Destroy target enchantment.
• Exile target card from a graveyard.

Cleave (You may cast this spell for its cleave cost. If you do, remove the words in square brackets.)
Destroy target [attacking] creature.

: Target creature can't block this turn.

Enchant creature
When this Aura enters, if there are five or more cards in your graveyard, tap enchanted creature.
Enchanted creature doesn't untap during its controller's untap step.

When this Equipment enters, attach it to target creature you control.
Equipped creature gets +2/+1.
Equip (: Attach to target creature you control. Equip only as a sorcery.)

: Add . Spend this mana only to pay a disturb cost or cast an instant or sorcery spell.

When this artifact enters, draw a card.
, Sacrifice this artifact: Target creature can't be blocked this turn. If it's a Vampire, it also gains lifelink until end of turn.

When this creature enters, put a +1/+1 counter on target creature.

Defender
Whenever an enchantment you control enters, this creature can attack this turn as though it didn't have defender.

Target creature gets +3/+3 and gains reach until end of turn. Untap it.

Deathtouch
When this creature enters, another target creature you control gains deathtouch until end of turn.