Succumb to Temptation

Carrion Howler

Pay 1 life: Carrion Howler gets +2/-1 until end of turn.

At the beginning of your upkeep, sacrifice Kuro, Pitlord unless you pay {B}{B}{B}{B}.
Pay 1 life: Target creature gets -1/-1 until end of turn.

Pay 3 life: Put a +1/+1 counter on Souldrinker.

Pay 2 life: Shadowcloak Vampire gains flying until end of turn. (It can't be blocked except by creatures with flying or reach.)

As an additional cost to cast this spell, sacrifice a creature.
Draw two cards.

Target player draws two cards and loses 2 life.