Crystallize Weapon

As an action, you touch a melee weapon, which is quickly sheathed in a thin layer of translucent, jagged crystals. For the next minute, the crystallized weapon becomes magical and has an attack bonus equal to half your spell attack, rounding up. On a hit, the target suffers the weapon attack's normal effects and takes an additional 1d4 force damage.

The additional force damage dealt increases by 1d4 when you reach 5th level (2d4), 11th level (3d4), and 17th level (4d4).