Barrier of the Four Kings of the World (5e Spell)
From D&D Wiki
|Casting time:||1 action|
|Duration:||Concentration, 1 hour|
You attempt to commune with the Four Kings of the World simultaneously. You must attempt a DC 18 saving throw using your spellcasting ability. On a failure, you regain the spell slot spent casting this. On a success, you form a physical seal on an object that has at least a 2.5 ft. radius of a flat surface. Any creatures of your choice within a 60 ft. radius of the seal take 2d6 radiant damage or regain 2d6 hit points, and the area is covered in bright light.