Channellers are very good at bringing forth magical energies, and the effects
of this spell show that. The caster creates a kind of projectile that impacts
with great force, then explodes. Since the channeller is grabbing energy at
short notice, they cannot be picky where it comes from, and therefore some
comes from the caster's own body. The damage of the spell increases as the
caster becomes better at controlling the flow of magical energy.