So there are entire small games published in the vein of this premise. I had no idea I needed a polymorphic chicken demon caper like this but wowee hahah. Great idea, great premise as an adventure itself...great all around.
The name of the game here is really those temptations and it summoned up 2015's The Witch for me in particular.
I genuinely think you could make a micro game out of this premise but regardless of what you do, great entry. I might have to find a place to use this at my table ASAP.