Banshee Wail is a great controlling AoE ability that fears and stuns enemies. This ability will help you a lot in PvP. Though the range of the spell is not so big, all enemies within the radius will be affected. Banshee Wail may help you to get rid of a group of attackers and may give you time to escape.
List of abilities that can be used in one combo attack before Banshee Wail