Hammerpedes

{3}{b}{b}, {t}: Put two colorless 2/1 Alien Hammerpedes with Provoke and Undying onto the battlefield under your control.
When an Alien Hammerpede deals damage to a creature, that creature gains Vanishing 3. When that creature dies, put a colorless 1/1 Alien Trilobite creature token with Trample, and Evolve onto the battlefield under your control.