Creature Quest - Eternal Phoenix (last stage of evolution).

• Special burns single target for 450% PWR damage. and rest of the row for 20% lasting 3 turns
• Heals itself from 30% HP and more when awakened, also rebirth once per combat when awakened.
• Can be cleansed with for example Siren so its target doesn't meet certain death

Thanks Galaad for posting! Original thread goes here

Deliberately I will also add link for Creature Quest Wiki, as Avonu posted earlier today.