Sickening Radiance

Casting Time: 1 action
Range: 120 ft., 30 ft. radius
Duration: Concentration, up to 10 minutes
When a creature moves into the spell's area for
the first time on a turn or starts its turn there,
that creature must succeed on a Constitution
saving throw or take 4d10 radiant damage, and it suffers one level of exhaustion and emits a dim, greenish light in a 5-ft. radius.
See XGtE, pg. 164