Burning hands

Burning hands is a spell of the Alteration school of magic. Learned by some wizards of relatively low experience, burning hands momentarily engulfs the wizard's hands in a burst of magical flames and then expels them rapidly into an adjacent area of roughly twenty-five feet in diameter. These flames do no real harm to the wizard but can scorch the flesh of others caught nearby during the fiery blast. The effect is instantaneous but damaging and the wizard requires only a short, momentary rest to refocus himself in order to cast the spell again.

Before the Spellplague, burning hands was also used by sorcerers and could only be cast a number of days equal to how many times the wizard had prepared the spell or the sorcerer had energy for. After the Spellplague burning hands became easier to access, though as a consequence it no longer grew in power with its caster.