The Benefactress, Red Death, Candra of the Floating Spires.
Gambit (1st series) #1
Powers & Abilities:
telekinetic powers allow her to levitate and direct nearby objects, project psionic force bolts, propel herself through the air, cloak herself and others from detection, and activate or disable superhuman powers in others, can absorb the energies released at death to regenerate her physical body
Candra was apparently killed in X-Men (2nd series) #61, but returned to physical form in Scarlet Spider (2nd series) #18-19. She apparently died again in those issues, but there's nothing to prevent her from returning the same way again.