Walk the Plank

Heartless Act

Choose one —
• Destroy target creature with no counters on it.
• Remove up to three counters from target creature.

Back to Nature

Cast Down

Murder

Defeat

Destroy target creature with power 2 or less.

Fell

Infernal Grasp

Destroy target creature. You lose 2 life.

Sarulf, Realm Eater

Whenever a permanent an opponent controls is put into a graveyard from the battlefield, put a +1/+1 counter on Sarulf, Realm Eater.
At the beginning of your upkeep, if Sarulf has one or more +1/+1 counters on it, you may remove all of them. If you do, exile each other nonland permanent with mana value less than or equal to the number of counters removed this way.

Cradle to Grave

Destroy target nonblack creature that entered this turn.

Doom Blade

Death Stroke

Abrupt Decay

This spell can't be countered.
Destroy target nonland permanent with mana value 3 or less.