Radiant Brand

Evocation cantrip(Solarmancy)
Casting Time: 1 action
Range: Self
Components: S, M (A Common Sunstone or rarer Sunstone and a weapon worth at least 1 sp)
Duration: 1 round

You imbue your weapon in dazzling sunlight. As part of the action used to cast this spell, you must make an attack with a weapon against one creature, otherwise the spell fails. On a hit, the creature suffers the attack’s normal effects, and they are marked with a radiant brand until the start of your next turn. If the creature is hit with a weapon attack by another creature other than you while it is branded, it takes additional radiant damage equal to your Spellcasting modifier.

At higher levels. The spell’s damage increases to 1d6 + your Spellcasting ability modifier when you reach 5th level, and increases by an additional 1d6 at 11th level (2d6 + your Spellcasting ability modifier) and 17th level (3d6 + your Spellcasting ability modifier).