Infested Spaceship

{t}: Add {b}{b} to your mana pool.
{b}{b}, {t}: Create a black 1/1 Facehugger creature token with deathtouch.
When a Facehugger creature token you control destroys another creature, put a black 1/1 Xenomorph Alien creature token with Deathtouch and Evolve onto the battlefield under your control.