The Mace of Molag Bal drains its victim`s spell points and gives them to the bearer. If the victim has no spell points, he is drained of strength, which is also transferred to the wielder. Using the Mace of Molag Bal can actually give its bearer more spell points or more strength than he would have fully rested. However, these bonus points are temporary. Molag Bal has been quite free with this artifact.