Shackles the target undead enemy for up to 50 sec. The shackled unit is unable to move, attack or cast spells. Any damage caused will release the target. Only one target can be shackled at a time.
Shackle Undead is a priest ability learned at level 32. It will shackle an undead enemy, making it unable to move or attack for the duration of the spell, and the creature will be visibly enclosed within chains.