Flyer Attacks is a standard type of attack system possessed by zerg air units, researched at the spire or greater spire. The attacks can be upgraded through evolution to make it stronger. StarCraftEdit Flyer Attacks +1 bonus to attack per level for mutalisks +2 bonus to attack per level for guardians and devourers. Acquisition Purchased from Spire Greater spire Hotkey A Level 1 Cost 100 100 266 Level 2 Cost 175 175 298 Required Lair Level 3 Cost 250 250 330 Required Hive StarCraft IIEdit Flyer Attacks Increases attack damage of mutalisks, corruptors, and brood lords. Acquisition Purchased from Spire Greater spire Level 1 Cost 100 100 160 Level 2 Cost 175 175 190 Required Lair Level 3 Cost 250 250 220 Required Hive v • e Retrieved from "https://starcraft.fandom.com/wiki/Flyer_Attacks?oldid=147054" Categories: StarCraft Zerg unit upgrades StarCraft II Zerg unit upgrades Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.