Gembomb

This spell converts up to one gem per five caster levels into a grenade-like missile that can be lobbed by the caster at an enemy target. The caster must hold the gems in his or her hand when the spell is cast. Gems enchanted by gembomb can be thrown only by hand (range 10/20/30). Misses use the grenade-like missile table in the DMG to determine the point of impact.

A gembomb explodes in a rainbow-colored shower of magical energy when it is thrown to impact a hard surface. It will not explode if dropped or if held temporarily in a pouch. On a direct hit a gembomb inflicts 1d6 points of damage per 50 gp value of the gem. to a maximum of 3d6 points of damage. Creatures not struck directly, but within 10 feet of the impact, take 1d3 points of damage per 50 gp value of the gem, to a maximum of 3d3 points of damage. Those who suffer damage from the gembomb are allowed a saving throw vs. spell for half damage.

Only one enchanted gem can be thrown per round. The caster cannot have more than one gembomb spell active at a time. Gems that have not been thrown when the spell expires disappear; all gems that explode are destroyed. The spell does not function upon artifacts.

The material components of this spell are one or more gems worth at least 50 gp.