Acid orb

Acid orb, also known as acid splash, is a conjuration spell used by sorcerers, and in the past wizards. When acid orb is cast the sorcerer using it conjures, with his or her implement, a sphere of liquid acid which, when thrust at a target within 100 feet, collides with its target and explodes, burning one creature with its contents. The spell is easily cast and a sorcerer need not rest before recasting it.

Before the Spellplague, acid orb was better known as acid splash and could be cast by wizards, as well as sorcerers. The spell was significantly weaker at the time, being one third as deadly. Like other spells, acid orb could only be cast as many times as its caster either had energy left for spellcasting or, in the case of wizards, had prepared for it.