Quantum Domain

Your god gives you a version of reality that won't be discovered for thousands of years, and you can manipulate it into your domain spells. Note, fly is a placeholder because feign death is non SRD. If you have PHB use feign death instead.

Bonus Proficiency

When you choose this domain at 1st level, you gain proficiency with heavy armor.

Quantum manipulation

Also starting at 1st level, you notice quantum fluctuations more often. Whenever you use a spell of 1st level or higher, if a damage die lands 25% of the average outside the average, you can change it to the average. You can change a number of dice equal to the spells level per spell

Channel Divinity: Quantum Entanglement

Starting at 2nd level, you can use your Channel Divinity to quantum entangle objects

As an action, you present your holy symbol and evoke quantum energy that can entangle 2 objects or creatures, or one of each. When one moves, the other will move the same direction at the same distance. This effect ends when 1 minute passes

Channel Divinity: Electron Reversal

Beginning at 6th level, you can use your channel divinity to turn some electrons into positrons. You can use your channel divinity force a creature to make a constitution saving throw against your spell save DC. On a failed save they take 4d10 + your cleric level necrotic damage and suffer the effect of the confusion spell for 1 turn, or half damage on a failed save, and won't be confused

Quantum Strike

At 8th level, you gain the ability to infuse your weapon strikes with quantum energy. Once on each of your turns when you hit a creature with a weapon attack, you can cause the attack to deal an extra 1d8 psychic damage to the target. When you reach 14th level, the extra damage increases to 2d8.

Quantum self

Starting at 17th level, you have learned how to turn yourself into a quantum object. If either all things seeing you are blind, or its heavily obscured, you can split yourself into 2 copies. 50% of the time a hit will turn into a miss (including a 20), however if a miss happens (because of this feature) the next hit will be a hit. You also do not have disadvantages on hitting other creatures