The Mutalisk is the basic zerg air attack unit. The Mutalisk can fire at both air and ground and it's weapon can bounce onto other targets hurting them as well. The Mutalisk is good for cheap air or ground support, it's also very fast so you get get in pat your enemies defenses and attack where they are weaker. The downside is that the Mutalisk isn't terribly poweverful alone and you will probably need about a dozen or more to really wreck havok. Mutalisk can also transform into two other people if you have a Greater Spire, the first is a Gaurdian The second thing is the Devourer. Both of these are very halpful but they are fairly expensisive so dotn always upgrade, sometimes the original is best.
