Specimen Six

First Strike, Acid Blood 3, Hexproof, Higher Intellect (this creature is unlockable and has Deathtouch as long as you control one other Xenomorph creature)
When a creature with Queen in its name dies and isn't legendary, you may sacrifice this creature and search your library for The Queen, Overlord, then put it in your hand or cast it for {5}{b}, shuffle your library afterwards
"Mr Wayland thinks there might be something special about it"