http://www.d20pfsrd.com/bestiary/monster-listings/magical-beasts/greymalkin
I tripped over this creature and thought it sounded like an interesting (annoying as hell) encounter. The problem is...it's spell-like ability of constant- mirror image confuses me.
I think, based on the rules for constant spell-like abilities, that it automatically recasts the spell every turn as a swift action. Or maybe it can only do that when it runs out of images?
That's probably the best interpretation, but I wanted to know how it was intended to work.
A constant spell-like ability or one that can be used at will has no use limit; unless otherwise stated, a creature can only use a constant spell-like ability on itself. Reactivating a constant spell-like ability is a swift action.
Yup, renews it as a swift every round.
Thank you for your reply! I'll run it that way, and if anyone is interested, report back with my players howls and screams of dismay.