Laura the Saber Of Blood surpassed Stukov and Swarm Zergs in one seemingly simplier way. She infested a Vespene Geyser by specific mutation of Rubybrood Zerg Drone based on lungs.

Laura's Drones built specific Creep Tower by her inspiration from case of wild bee/wasp/hornet nest. Then she went further and mutated some of her Zerg Scourges into a Bone Wasps.

(Zerg belongs to Blizzard)