Quote Originally Posted by Livilda View Post
Vanilla WoW. Scarlet Monastery. If you went in without clearing ALL the trash, everything you didn't kill would come attack during the boss.
SE even has a precedence for doing something like this, when you fight the Ram NM in Lufaise Meadows for a relic material he'll summon all sheep and ram in the zone to his side. So it's not exactly the same but it's a similar concept SE has done before and can do again if they chose to.