I am confused about Devilbound creatures, which seems terribly overpowered. Especially the pit fiend bound ones.
A creature bound to a pit fiend is able to throw quickened fireballs three times a day, and a blasphemy once a day. This potentially means you could have a 5HD monster throwing around 7th level spells.
Am I missing something, or is there an errata somewhere? Is there something preventing a 5HD creature being bound to a pit fiend?