Aura of Tyranny(Tome of Battle: The Book of Nine Swords, p. 57)
Devoted Spirit (Stance) [Evil]
Level: Crusader 6 (Two Devoted Spirit maneuvers),
Casting Time: 1 swift action
A sickly gray radiance surrounds you, sapping the strength of your allies and funneling it to you.
While you are in this stance, you drain hit points from your allies. At the end of your turn, you can choose to deal 2 points of damage to each willing ally within 10 feet. For each ally who takes this damage, you heal 1 point of damage.