Xanathar's Guide to Everything, pg. 171
Word of Radiance
0-level (Cantrip)
Evocation
Casting Time 1 Action
Range 5 ft.
Duration Instantaneous
Components V, M
Materials A holy symbol.
Damage Type: Radiant
Saving Throws: Constitution
Description: You utter a divine word, and burning radiance erupts from you. Each creature of your choice that you can see within range must succeed on a Constitution saving throw or take 1d6 radiant damage.
At higher levels: The spell’s damage increases by 1d6 when you reach 5th level (2d6), 11th level (3d6), and 17th level (4d6).
Class(es): Cleric