Book of Ebon Tides
2-level Transmutation
Your target’s weapon rapidly corrodes. A creature of your choice within range that is holding a manufactured, nonmagical weapon in one of its hands must succeed on a Strength saving throw. On a failed save, the target must roll all weapon damage dice twice and take the lower result. If the spell ends before 1 minute has passed, the target’s weapon returns to its normal state. Otherwise, the weapon breaks down into a pile of rust or wood chips, as appropriate.