StarCraft II: Legacy of the Void/New Zerg units

Lurker
Same as the lurker in Brood war and Heart of the swarm only this time have long range. Effective against large numbers of ground enemies.

Ravager
Evolved form of the Roach. This unit is a siege unit that makes death upon immobile targets like siege tanks, lurkers, photon cannons etc. but still weak to marauders and banshees.