Screaming Terror.

I used it all day yesterday in Lower Guk (live side), very few resists all
day. It lasts 15 seconds max, but the mob might not start to frenzy after
the spell wears off. Be aware that casting and melee enhance the chance of a
break. Two Necromancers were plenty of crowd control for us to take the king
room, but an Enchanter is still a better option for crowd control. Over all,
a very valuable addition to our spell line up. It has been one of my 8
memorized since the patch.