User blog comment:FairyRaven/Fairy Tail Chapter 421: Wendy and Chelia, Review and Commentary/@comment-26052540-20150223160342/@comment-7418318-20150223224343

Speaking of finding the monster-tamer: How are they going to do that?

Or to be more precise, how will they know which of the many Orochi mages is the monster-tamer?

And while getting rid of the tamer will disrupt any attempt of a coordinated attack, won't the monsters already inside and close to the city still attack everyone? They surely aren't called monsters for being so docile. Without control they'll probably run amok and still need to be defeated or driven off if they want to save the city.