Frost Storm

Unlike most attack spells, which rely on fire in order to hurt enemies, Frost Storm spell uses the exact opposite element. Calling upon the powers of the sky, the mage calls forth a rain of sharp ice blades, which on their way to the ground horribly injure all the creatures surrounding them. Only very strong enemies can survive this rain of frosty death.

Note that the storm continues until dismissed, constantly draining the mana of the mage.