Zerg Spawning Pool

{x}{b}{g}: Larva Mutation - Remove {x} Larva counters from a controlled Zerg Hatchery, Zerg Lair, or Zerg Hive to create {x} 1/1 black and green Zergling creature tokens with "Band with other Zerglings".

{u}{b}: Metabolic Boost - All newly summoned Zerglings gain Haste.