Vast yet subtle control of spirits
Covet a spirit
Spirit Dominion is the ability to have control over the thoughts and actions of Spirits.
The only known user of this ability was The Necromancer. He used it to control Penny Halliwell. Under his dominion, he was able to paralyse her, inflict debilitating pain and influence her actions. His control appeared to subtle but nonetheless powerful, as Penny was fully aware that she was being controlled, yet could not resist him.