Ball of Lightning

Missile
Creates a ball of lightning in the caster’s hand. Unlike a regular Missile spell, however, a Ball of Lightning floats away in the direction the caster wills it to; it cannot be hurled in the usual fashion. The ball is utterly silent and moves in a straight line at a maximum speed equal to the caster’s skill divided by 5 (round down), regardless of wind and nonmetallic obstacles – the ball floats right through windows, curtains, walls, etc. It maintains its heading and speed unless the caster concentrates to change it. The ball explodes on the mental command of the caster or upon contact with a living being or metallic object. If the spell is allowed to expire, the Ball winks out of existence without exploding.

Duration: 1 minute.
Cost: Any amount up to twice your Magery level per second, for three seconds; half that to maintain. The ball inflicts 1d-1 burning damage for every 2 full points of energy to anyone within 1 yard of the explosion. Those further away divide damage by three times their distance in yards (round down; See AOE, Cones, Explosions).
Time to cast: 1 to 3 seconds; the ball grows in the caster’s hand as the casting
progresses.
Prerequisites: Apportation and Lightning

Item
Staff, wand, or jewelry. Usable only by mages.
Cost to create: 600 energy and a $500 opal.