Chromatic Rift

You select a point you can see within range, and focus on drawing upon the elemental energies of one of the inner planes. Once you've selected the elemental energy, you create a rift, too unstable for any beings to pass through, but enough for a vent of energies from the designated plane to pour through, bathing an entire area in the volatile forces. You choose acid, cold, fire, lightning, poison, or thunder for the type of rift you create, and all creatures within this spell's area of effect make a Dexterity Saving Throw. Creatures within the area take 4d10 damage of the chosen type on a failed save, or half as much on a successful one.

This rift does not ignore cover, and treats its effect as originating from the center of the rift when considering cover benefits. The elemental energies coming from the sphere are potent and powerful, and causes secondary effects based on the chosen element, as follows:

• Acid: The area of the rift leaves a lingering cloud of acidic fog that lasts for a number of rounds equal to the number of D10's rolled for damage. Creatures making attacks through this cloud, from within it, or against creatures or objects within it make their attacks at disadvantage while this fog lingers. Further, any creature that begins their turn within this cloud takes 1d10 acid damage.
• Cold: The ground within the area of effect is covered in slick frost. It is treated as difficult terrain of a DC equal to this spell's DC for a number of rounds equal to the number of d10's rolled for damage.
• Fire: Flammable objects, structures, and materials not currently being held or worn within the area are ignited.
• Lightning: Creatures that fail their Dexterity Saving Throw must make an additional Constitution Saving Throw against being stunned until the end of their next turn.
• Poison: Creatures that fail their Dexterity Saving Throw must make an additional Constitution Saving Throw against being poisoned for 1 minute.
• Thunder: Creatures that fail their Dexterity Saving Throw must make an additional Constitution Saving Throw against being deafened for 1 minute. This rift is audible within 600 feet from the center of the rift.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, the damage increases by 1d10 for each slot level above 4th.