Crest of Bahhaoth

Those magi of Void who also learn the magics of water may call upon their innate connection to the Sea that Is Not and draw forth a dread ul'ashil into their own weapon. This binding may only be cast at night, and the caster must have at least a faint red aura to be able to make such a binding.

While a weapon so bound is wielded in combat, if the caster has demons bound to them the ul'ashil will draw health from the demons into the caster. This harms the demons, but so what?

This spell requires that the Spiral of Bahhaoth be scribed in the caster's own blood for the binding to succeed; it will be consumed with the casting.