Departure to Destruction

A swirling cloud of brimstone and red lightning surround the area. All enemies caught in it take 3d4 of necrotic damage each turn. When someone dies within the Departure to Destruction, they explode in a 6ft radius. Anyone within that radius takes 1d6 of fire damage. For every turn, the caster must succeed in a constitution check. If the caster fails, the Departure to Destruction dissipates.