Corpse-Pile Dreadnought

{b}{b}{t}: Counter target spell. If you do, summon a 1/1 black Zombie creature token.If the spell would deal damage, summon an additional 1/1 Zombie creature token.
{t}: Sacrifice all Zombie creature tokens. For each one sacrificed, you may either deal 1 damage to target enemy or heal 1 damage to target ally.