Every player in the battlefield that is stepping on or in the area of the cursed ground are losing 1 health point per second. The Arch Lich Malus' Life Drain may not be strong if it only drains that much but he even drains the life that flows from his own undead that numbers in the hundred thousand.
The players thought that the Life Drain would end in about a minute but they were severely mistaken. The Arch Lich continued to sap the life out of them like it finally became a passive skill. There was a great drop in the Arch Lich' mana though as the previously limitless mana pool suddenly started dropping.
The Arch Lich swept its hand and bone spikes emerged from the Necropolis itself. The bone spike tried blocking the chaotic elemental sphere that Emrys redirected but it was not enough. A flash of fire, a sudden blast of strong wind, boulders and even ice shards would come out of the chaotic elemental sphere to destroy the area.