Blade of Radiance

A blade of radiant energy springs from your hand to deliver a slash to a creature within range. Make a melee spell attack against the target. On a hit, the target takes 1d10 radiant damage, and they can't take reactions till the start of their next turn. 

The spell's damage increases by 1d10 when you reach 5th level (2d10), 11th level (3d10), and 17th level (4d10).