Flaming sphere

Flaming sphere is a conjuration spell used by wizards. When cast, flaming sphere summons a globe of hot flames within fifty feet of him or herself, which the caster can then move at a speed roughly equivalent to that of a human. The sphere's flames are volatile and any creature caught nearby that is unable to get out of the way is scorched. Though the sphere dissipates almost immediately after casting on its own, with a little effort the wizard can maintain the sphere for several minutes or cause it to flare up again. Once the sphere is gone, however, the wizard is unable to reconjure it without substantial rest.

Prior to the Spellplague, flaming sphere was also cast by sorcerers. Like virtually all spells of the time, flaming sphere was limited to a number of castings per day equal either to the times a wizard had prepared it or a sorcerer had the energy for. Powdered iron, tallow, and brimstone were sometimes used in the casting of the spell and druids also possessed the capacity to cast a very similar, nigh identical, evocation.