New Cantrip: Blade of Light

Evocation cantrip
Casting Time: 1 action
Range: Touch
Components: V, S, M (a weapon)
Duration: Instantaneous, up to 1 minute
You make a melee attack as part of this spellcast, which adds your casting modifier as radiant damage to the attack. Your weapon shines light for 1 minute or until you lose your concentration. The weapon shines bright light within a 15-foot radius and casts dim light out in a 30-foot radius.
At Higher Levels.
5th: Your melee attack deals an additional 1d8 + casting modifier radiant damage.
11th: 2d8 + casting modifier
17th: 3d8 + casting modifier