Dread Ring

an enchanted area created by necromancers with the intention of stealing souls of the living in order to feed necromantic powers such as raising the dead or structures such as fortresses. Basically people that die there feed the power of the necromancer binding the spell with their souls, and will likely be raised as undead. Dread rings are most notably affiliated with the red wizards of Thay under the rule of Szass Tam.