I have a character who recently hit level 21, which will be the last level of the campaign. As such, I am looking for something fitting her destiny more than power, and the DM is most likely willing to wiggle a lot of stuff since the character will soon be retiring anyway. I am primarily just looking for ideas, to save myself the trouble of writing up my own, than I am looking for anything effective or even anything that I could conceivably actually take. It could even be a monstrous creature; we’d just steal some key special features/attacks/qualities.
The character is a human dread necromancer/jade phoenix mage with the Tomb-Tainted Soul feat (i.e. necromantic spells, faith & fire maneuvers, and she heals from negative energy and hurts from positive energy, as undead do).
She is also a devout worshiper of the Silver Flame. What this means is she uses her necromantic prowess to put the undead to rest, and tries to encourage the Church to see the undead as victims rather than abominations. She sees necromancers that actually control undead as slavedrivers.
She’s become very close to the Silver Flame over the course of the campaign, having physically touched it in Flamekeep, where it spoke to her, and then having been given a piece of it by the Keeper of the Flame for her quest to save the world. The jade phoenix mage class has been refluffed as a silver phoenix mage, and there have been hints throughout the campaign that the spirits she has attuned to are those of the couatls that sacrificed themselves to create the Silver Flame in the first place.
She is planning with her team to use that piece of the Flame, along with her Silver Immolation class feature, as a kind of massive holy/positive energy bomb to destroy the Moon of Death which is currently attempting to Majora’s Mask the world.
What I’d like to do with her last level is turn her into a kind of angel of the undead, protecting them from necromancers and guiding them to peace and final death. She is not Deathless, nor, with the Tomb-Tainted Soul feat, would becoming Deathless be particularly appropriate for her, but a Deathless creature might have the right fluff here.
Anyway, any thoughts or options anyone can provide would be very much appreciated.