As it has good stats and trample, the commander can be a source of damage for this effect
(2017-08-25) If you somehow control a Herald's Horn with no chosen creature type, no spells will cost less to cast, not even creature spells with no creature type
They'll cast powerful spells, call upon classic summons, and even visit their favorite locations on the back of a Chocobo
For example, the age old Earthcraft combo Im sure comes to mind, and in addition these squirrels and squirrel related cards all can utilize the token: Acorn Catapult Acorn Harvest Chatter of the Squirrel Deranged Hermit Druids Call Liege of the Hollows Nut Collector Squirrel Wrangler Not that any of these cards are going to spike any time soon, since Squirrels is one of the most casual of casual tribes, however it looks like Earthcraft has been steadily increasing in price over the last two years
The only downfall is that since Mirage MirrorMirage Mirror doesn't retain the copy ability after you activate it, but I'm sure that for the sake of insane combo potential it's for the best
Even better, this Koma keeps the uncounterable ability that the original has, making this a threat that many players wont be able to beat
