Guardian Shield active to protect from impending damage and a hydra about to use Ensnare
Units eventually overwhelm the player if they don't use their abilties right. Using units in combination (like a High Templar with the slow but devastating hunter-seeker weapon with the hydralisk ensnare) can make some extreme carnage.
More Madness
Ensnare ability in effect. A few other random units in this picture. The BC will not be player controlled as its there for testing purposes.