BLM's arnt the only one Mobs which can and will do AoE's
Whm's cant cast Diaga or rdms?
never fighted any Mobs like Moblins which can do a AoE move?
just 2 examples for you!
La Vaule (S) - Falsespinner Bhudbrodd
such a nice NM for you doing AoE moves having a High Counter rate