Umbral Shackles affects a 15-foot radius. Living creatures must make a Fortitude roll or become enveloped in a dark aura, becoming Slowed, unable to regain Vitality, or use invisibility.
You release a wave of darkness, spreading a fifteen-foot sphere where shadows twist around each living creature. Figures become cloaked in black auras, their outlines obscured, halting healing and nullifying invisibility.