Celestial Imbuement

4th-level transmutation (Solarmancy)
Casting Time: 1 minute
Range: Touch
Components: V, S, M (A Rare or rarer Sunstone and 50gp worth of elysian salts which are consumed upon casting)
Duration: 8 hours

You anoint a nonmagical suit of metallic armor, a weapon that primarily is made of metal, or up to 3 cubic feet of nonmagical metals with radiant power. For the duration, the metal gains the properties of Celestial Steel, where it is visibly glowing and is considered magical.

At higher levels: When you cast this spell using a spell slot of 5th level or higher, you can imbue another suit of nonmagical metallic armor, another weapon primarily made of metal, or an additional cubic foot of metal within reach for each spell level above 4th.