Cloudburst

To cast this spell, you must satisfy the following fusion components: maelstrom, destructive wave

You target a location within range. All creatures within a 60-foot radius around the location must succeed on a Charisma saving throw or be transported to a 120-foot radius demiplane. They appear in the center, and you may choose to appear at any location in the demiplane. While in the demiplane, heavy rain pelts the creatures, reducing their vision to 30 feet, overriding darkvision and blindsense. Any spells you cast targeting the creatures that deal lightning damage have advantage, and the targets have disadvantage on their saving throws against the spell's effects. The first time you deal lightning damage to each creature in the demiplane, it takes the maximum possible damage.

This spells automatically ends if all the targeted creatures die, you die, or you choose to end the spell as a bonus action. Both you and the targeted creatures reappear at the locations you were when you cast the spell.