Eticore's Planar Portals

You open four tiny windows into the planes of existence which emit volatile planar energy. Each window appears in a space you choose within range. Each creature within 5 feet of a window must succeed on a constitution saving throw or take 10d6 damage of a type determined by the plane you choose, or half on a successful save, the DM is the final arbiter of what damage types make sense. A creature in range of multiple portals divides the total damage between all applicable damage types.

When you cast this spell with a spell slot of 7th level or higher, the damage increases by 2d6 for each slot level above 6th.