One cast of Structure Overcharge plus Alarak can take out the first Train, allowing you and your ally to build up your forces without worry. The zerg scourge/viper comp really destroys her, and her stalkers just don't cut it in a pinch. Set up around 10 Bile Launchers and position them such that they can hit both the top and bottom tracks at the same time.

In addition, Queens can be used to Transfuse your static defenses as well as spread creep around the base for Zagara to travel around quickly.

Fully upgraded co-op mutalisks are far more powerful than any of the campaign variants (they are basically all the campaign upgrades combined), with 6 bounces and double damage vs. Hatcheries are generally the superior choice over Queens when it comes to larvae. For regular missions, this is not very practical due to the number of Scourge you will need to produce in order to pull this tactic off, but all the same this is a useful strategy to keep in mind for difficult mutations. Karax is a commander that has incredibly good abilities which allow the player to kill entire armies without even needing to warp in units which is actually pretty weird considering what we're playing. The first wave spawns at 4:00, so you can use your second Structure Overcharge to clear your allyâs expansion if necessary before sending Alarak to clear the first attack wave and capture the central Celestial Lock at the same time.

Starcraft 2 best co op commander