acid arrow
Class: mage : 2 magus : 2
Damage Type: acid
Syntax: cast CLASS acid arrow [on TARGET]

When throwing a dart at a victim and casting the acid arrow spell, the dart will turn into an acidic arrow with the aim and speed as if fired by a fighter of the caster's spell level. Damage will be inflicted immediately upon hitting the target, then the acid will seep through the victim's veins, doing more damage per combat round until the acid wears off or the target is dead.