Melf's Acid Arrow

(Player's Handbook v.3.5, page 253, DnD 3.5)

Conjuration (Creation) [Acid]

Level: ; Sorcerer/Wizard 2; Warmage 2; Duskblade 2; Sha'ir 2; Savant 2; , Slime 2
Components: V, S, M
Casting Time: 1 standard action
Range: Long (400 ft. + 40 ft./level)
Effect: One arrow of acid
Duration: 1 round + 1 round per three levels
Saving Throw: None
Spell Resistance: No

A magical arrow of acid springs from your hand and speeds to its target.
You must succeed on a ranged touch attack to hit your target.
The arrow deals 2d4 points of acid damage with no splash damage.
For every three caster levels (to a maximum of 18th), the acid, unless somehow neutralized, lasts for another round, dealing another 2d4 points of damage in that round.
Material Component: Powdered rhubarb leaf and an adder's stomach.
Focus: A dart.