Wind Shockwave
This content is based on GURPS, but is not strictly GURPS rules.
Regular
An explosion of concentrated wind erupts off of you, not harming you, but exploding in every direction.
Anyone closer to you than one yard takes full damage. Those further away divide damage by three times their distance in yards (round down). It does double knockback on all targets; it can knock down even large swarms of flying creatures. It extinguishes normal fire within its radius.
The shockwave does injury damage to vaporous beings or swarms.
Cost: Any amount up to twice your Magery level per second, for three seconds. Deals 2d knockback for each full point of energy put into the spell. The cone has a maximum range equal to half the energy put into the spell.
Time to cast: 1 to 3 seconds.
Prerequisite: Emit Gale.
Item
Staff or wand – the bolt is fired from the end of the item.
Energy cost to create: 1,200. Usable only by mages.