Daemon, Astradaemon

Believed to be creations of the Four Horsemen, astradaemons live out their existence in search of souls to harvest. These deadly creatures are ravening planar predators, openly hunting throughout the void for souls on which to feed. These voracious creatures are the personifications of death resulting from negative energy or level drain. Their vile touch drains life force from their enemies, and even perishing near them sates their thirst for life and souls.

Devour Soul — As a standard action, an astradaemon that begins its turn with a grappled opponent can attempt to draw out and consume the soul of its victim, killing it instantly. This ability only works on living creatures, which may resist with a DC 25 Fortitude saving throw. The save is Constitution-based. For every 5 HD of the slain creature, the daemon gains a +1 profane bonus on attacks, saving throws, and checks for 24 hours. This ability does not consume all of the soul, and pieces of it still exist after the daemon completes its feast (enough to be able to resurrect the slain victim normally).

energy drain (1 level, DC 25)

Combat Reflexes, Dodge, Flyby Attack, Iron Will, Mobility, Nimble Moves, Power Attack, Spring Attack, Weapon Finesse

Acrobatics +24 (+48 jump), Escape Artist +27, Fly +9, Intimidate +27, Knowledge (planes) +22, Perception +22, Sense Motive +22, Stealth +23, Survival +22