VSS
Rusting Grasp
3-level Transmutation
Casting Time: 1 action
Components: V, S
Duration: Instanteneous
You conjure a potent acid at your fingertips, which can corrode metal and burn flesh. Make a melee spell attack against a creature or object within your reach. On a hit, a creature takes 6d4 acid damage and, if it is wearing nonmagical metal armor or wielding a nonmagical metal shield, you can corrode either its armor or shield. Corroded armor takes a permanent and cumulative -3 penalty to the AC it offers. Armor reduced to an AC of 10 is destroyed. A corroded shield is destroyed.
If you target a nonmagical metal object with this spell that isn't being worn or carried, you corrode and destroy parts of the object you choose that can fit within a 1-foot cube.
At higher levels: When you cast this spell using a spell slot of 4th level or higher, the damage increases by
2d4 for each slot level above 3rd. Additionally, you can destroy one additional cubic foot of a nonmagical object for each slot level above 3rd.