Sorcerers have a 10s sleep on a 20s cooldown which can be removed once to apply a second sleep, say on another target. Sorcs also have 3 stuns, one on the AoE of Eye + Advanced WI (although WI is only 1 sec duration) and one on Armageddon, granted Eye's stun won't apply until the person gets hit but Armas is instant and again it can be refreshed once so you can use it again.
Armageddon has an efficiency of 99 btw so it can't be potted off.