Ley line

The ley lines are a network of courses of power that flow both within and without, surrounding the world of Lore. Connecting to both the Void and to the Core of Lore itself, they channel the energy of those places and allow for the use of magic, according to Diviara Celegra (Facing the Darkness).

During the conflict between the Paladin Order and the Necromancer Order, the ley lines used for the skills of each respective class were irreparably altered and damaged by the war. The connections of those lines to the mana core, and indeed to the elemental planes, have been so irrevocably severed that Paladins and Necromancers are to search entirely new avenues to produce their magic.