Grayson Islands

Yes, until it kills everyone within a 5-meter radius.

Well, in general, the comment still stands. High cost for the ability, immunity to sleep and mind control only in combat, not outside of combat...
And how does Mirror Image 2 combine with Mirror Image 1? If it's reflected, is there a 50% chance it will affect the one who cast the spell? Or a 50% chance to reflect it back at the one who directed the spell, 20% at someone else, and 30% that it won't be reflected?