When Skull Trap is cast, a magical skull launches itself to the center of the target area and floats there until detonated.
|“|| Skull Trap|
Upon casting this spell, a skull is thrown by the caster at the target area until a creature comes within 20 ft. of it. When this happens, the skull is triggered and explodes, damaging everyone within a 30-ft. radius. The damaged inflicted is equal to 1d6 Hit Points per level of the caster, or half with a successful Save vs. Spell. When casting this spell, it is wise to set it far away from the party lest they set it off accidentally.