Mutalisk Morph to Broodlord
Vultures + Goliath
Hydra Den at Tier 1.5
Scourge
units
Hydra Speed Upgrade
Lurkers attacking
Morph to Lurker
Morphing Lurkers
Lurkers
Mines placed without requiring targeting
Reaver Construction
Wraith + Science Vessel
Reaver Upgrades
Firebat + Medic
Units
15% smaller Ultralisks
Lurker Upgrade
Hydra Cost