Alien Egg

Defender
Whenever Alien Egg blocks a non- artifact
creature, attached it to that non- artifact creature
and put two Facehugger counter on it. At the beginning of your upkeep, remove a Facehugger counter from that a creature, if that creature has
no Facehugger counters on it, destroy it and
create a X/X black Tyranid creature token.
Where X is the destroyed creatures power and toughness toughness.