Cleon
Legend
Oh, it definitely is the embodiment of deathless.
Thus, to play within the OGL, it should get this underbar:
Cariad Ysbryd as Deathless
If you are using <i>Book of Exalted Deeds</i> in your campaign, cariad ysbryd are deathless rather than undead.
We can also give it a "deathless" ability that summarizes some of the usual deathless differences from undead.
Yes, we'd better do that to keep everything above board.
As for the stats, can we use anything from the 3E version of the Banshee?