Stamina Sorcerers do for AOE damage. As it silences enemies, it also procs the Ruffian (WHILE USING DUAL WIELD ATTACKS Gives you a 15% damage bonus when attacking stunned, immobilized, disoriented, or silenced enemies.) passive on enemies that can be silenced. Other than that, difficult trash fights can be made extremely easy with the long duration AOE stun/silence such as Moon Hunter Keep execute phase on last boss. But rarely seen because most people play NB DPS for the last few patches.
Used to use it only on hm vHRC to suppress Gargoyles. Then ZOS managed to make it bugged even there so the gargoyles just ignore it.
Now it's fully unslotted and unlearned since months, that's how much it's useful.