Radiant Consumption

{t} 1 Action.
{ut} (Recharge) Long rest.
{e} 1 Minute.
You and each creature within 10 feet of you take radiant damage equal to half your level (rounded up). In addition, once on each of your turns, you can deal extra radiant damage to one target when you deal damage to it with an attack or a spell. The extra radiant damage equals your level.