This potent combination transforms your graveyard and hand into an endless engine for mana and cards. With Necrotic Ooze on the battlefield absorbing the activated abilities of Asmodeus the Archfiend in your graveyard, you can pay three black mana to draw seven cards. Mind Over Matter then converts those newly drawn cards into untaps for your mana-producing permanents, which in turn supply the black mana needed to fuel Asmodeus the Archfiend's ability all over again.