Zerg hatchery

At the beginning of your upkeep you may search your library for any card with 5 or more copies in your decklist, exile it you may cast that card from exile this turn. Research-,{g}{g}, put a research counter on zerg hatchery. if Zerg Hatchary has a research counter on it creatures you control called zergling or hydralisk “gain: burow-{0}: tap this creature and put a stun counter on it,” and “if there is a stun counter on this creature prevent all damage that would be dealt to it