Aura of the Sun

You begin to glow with the radiance of the noonday sun, You shed bright light in a 30ft radius. The light emanates naturally occurring shadows and suppressed magical darkness. Additionally, any creature within the radius attempting to cast a spell with the "darkness" signifier or using shadow magic must succeed a save based on the caster's spellcasting ability (INT, WIS, CHA). DC is the caster's spell DC.

Any undead within the radius take 2d6 points of radiant damage at the start of their turn. On the caster's turn they can spend an Action to deal 3d6 radiant damage to a target of their choice within 30ft.

Any creature within the radius makes stealth checks at disadvantage.