Explosive Magic Crystal

Explosive Magic Crystals or Burst Spheres is a elven magic tool.

Description
Explosive Magic Crystals used magic stones as a detonating agent and that they are rather expensive. It can be activated by chanting『─Explode. Slay thine enemies─』it will explode.

Appearance
It looks like a black sphere seemed to be a combination of 2 half-spheres that were tied together with a string. It was a bit like a ball in an oven pan.

Abilities
One explosive magic crystal has enough power to easily blow the castle gate off of its hinges if the timing is right.

Trivia

 * From Arc’s perspective, Explosive Magic Crystals are a kind of magical hand grenade.
 * they are equally valuable as run stones and they usually cost 10 gold coins each.