Lidgar
Gongfarmer
Yeah, the TIG should definitely be tougher than CR 16, partly because it should invoke one of those "run away! run away!" moments. Adding fly, the flail of feathers that petrify, and any other things (I don't remember them all!) is sort of mandatory, at least for me. That encounter should be like trying to solve a really dangerous puzzle where the party needs to us all its wits and resources.







