Xenomorph Queen

Whenever Xenomorph Queen enters the battlefield, Incubate 1. (Crate an Egg token with "{2} Transform this artifact into a 1/1 Facehugger creature token with Impregnate")

On your upkeep, Incubate 2.
On your end step you may Transform one artifact without paying its mana cost.
Whenever another Xenomorph enters the battlefield, Xenomorph Queen gains one +0/+1 counter.