Death Knell Aura

Necromancy [death, evil]
Level: Artificer * 4, Cleric */Oracle * 4, Inquisitor * 4, Sorcerer */Wizard * 4, Warlock * 4
Components: V, S
Casting Time: 1 Standard Action
Range: 20 ft.
Area: 20-ft.-radius emanation, centered on you
Duration: 1 round/level (D)
Saving Throw: Will negates
Spell Resistance: yes

You gain a shimmering gray aura that feeds on the souls of creatures who die within it. The aura sheds light as a candle. If a creature at -1 or fewer hit points is within the aura at the start of its turn, it must save or die, granting you the benefits of death knell.