Astral Savagery

You channel astral magic to cause your hands to shimmer and glow, ready to deliver a radiant attack. 
Make a melee spell attack against one creature within 5 feet of you. On a hit, the target takes 1d10 radiant damage. After you make the attack, your hands quickly dim and return to normal.

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