Metal to Rust targets a Large or smaller metal object within range, attempting to corrode it into rust. Make a ranged spell attack against the object’s AC (19 for most metals, 21 for mithral, 23 for adamantine) or the holder’s AC.
You extend your hand, dark energy streaming toward the metal object. The surface bubbles and darkens as orange rust spreads rapidly, corroding intricate details until the once shiny material flakes and crumbles into brittle, reddish fragments.