Grahu, Lord of the Undead

Deathtouch, First Strike
Whenever a black creature you control dies, you may pay {b}{b}. If you do, return that creature to the battlefield with +2/+0 and haste. Destroy it at end of turn.
{4}{b}: Summon four 3/1 ghoul creatures. They may attack as if they did not have summoning sickness. Destroy them at end of turn.