You channel divine power to smite an undead or demonic creature.

If the target is vulnerable to Turn Evil, it may take a significant amount of damage and/or be Stunned, Repelled, or afflicted by Weakness. The exact effect depends entirely upon what type of creature it is and what instructions the person playing the creature has been given regarding this Call.

Generally this Call only works on undead and demons. The exact effects of it differ from target to target and how powerful the target is.