Menace

When this creature enters, you may destroy another target creature. If a creature is destroyed this way, you gain life equal to its toughness.

When this creature enters, you may destroy target nonblack creature.

When this creature enters, you may destroy target creature with power 1 or less.

When this creature enters, put a +1/+1 counter on target creature you don't control.

, : Destroy target creature with a counter on it.

(As a Siege enters, choose an opponent to protect it. You and others can attack it. When it's defeated, exile it, then cast it transformed.)

When this Siege enters, destroy target non-Elf creature an opponent controls with power X or less, where X is the number of lands you control.

When this creature enters, destroy target nonblack creature.

Menace (This creature can't be blocked except by two or more creatures.)

When this creature enters, you take the initiative.

Exploit (When this creature enters, you may sacrifice a creature.)

Menace

When this creature exploits a creature, destroy target creature you don't control with mana value 3 or less.

When this creature enters, it deals damage to target opponent or planeswalker equal to the number of creatures you control.

When this creature enters, exile target creature card from a graveyard. You gain life equal to that card's toughness.

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.)

When this creature enters, destroy target Angel.

When this Equipment enters, attach it to up to one target creature you control. Destroy up to one other target creature.

Equipped creature gets +1/+1 and has menace. (It can't be blocked except by two or more creatures.)

Equip

Metalcraft — When this creature enters, if you control three or more artifacts, target player loses 4 life and you gain 4 life.

Whenever this creature or another Ally you control enters, you may have target player lose life equal to the number of Allies you control.

When this creature enters, you may have target opponent discard a card.

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)

When this creature enters, destroy target nonartifact, nonblack creature.

Evoke (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)

Flying, menace

Exterminate! — When this creature enters, destroy target creature an opponent controls. That player loses 3 life.

Menace

Greven gets +X/+0, where X is the amount of life you've lost this turn.

Whenever Greven attacks, you may sacrifice another creature. If you do, you draw cards equal to that creature's power and you lose life equal to that creature's toughness.