Dark swarm
Ability of Mudkips and Defilers to create camouflaging clouds activates once per round and covers several ally organic units, increasing their dodge chance by [ability power]/[target mass] percent. (Mass is the sum of the cost in metal, minerals and Vespene.)
Mudkip has 5000 power and covers 10 targets. Defiler has 10000 power and covers 30 targets.
This effect stays up to the end of combat and can accumulate up to 20% for each unit.