Undermine Armor

1st-level transmutation (chaos)

Casting Time: 1 action
Range: 30 feet
Components: V, S
Duration: Concentration, up to 1 minute

You unravel the bonds of reality that hold a suit of armor together. A target wearing armor must succeed on a Constitution saving throw or its armor softens to the consistency of candle wax, decreasing the target’s AC by 2.

Undermine armor has no effect on creatures that aren’t wearing armor.