Hi, I am gm'ing for a party of 12th level characters through some exceptional circumstances I am going to replace a player's eidolon with one that is an aspect of a very powerful imprisoned devil (outcast noble devil).
I am not quite certain on the specifics of either the diabolical entity, or the eidolon. I am looking for cool suggestions to create this diabolical entity and possible eidolon with evolutions.
The eidolon will be bound to the player when he reaches level 13 and has access to 3 additional points for half-elf racial favored class. I might cheat the system slightly to fit balanced powers in that seem fitting, so feel free to make suggestions that do not exactly comply with the core rules.
Thanks in advance all ^^