Facehugger

Acid Blood (When this creature dies, you may put a -1/-1 counter on target creature.)

Infest {1}{b}{w} (If you cast this for it's infest cost, it's an aura spell with enchant nonartifact creature)

Enchanted creature is destroyed at the start of your next upkeep, exile this card, then return it to the battlefield transformed under its owner’s control.