Ye Ole's Soul Switch

You target two willing creatures you can see within 10 feet of each other within range. You reflect the targets' souls across the reflective surface, swapping their minds and physical bodies for the duration.

When the switch occurs, each target retains its own:
— Personality, alignment, and memories
— Skill and tool proficiencies
— Ability scores, class levels and  features, and spellcasting abilities

When the switch occurs, each target adopts the other:
— Species, traits, and physical features (such as Darkvision, natural weapons, or Speed)
— Current equipment, worn items, and physical and magical conditions (such as status conditions, lingering injuries, or curses)
— Hit Points and Hit Point Dice

Permanence. If either target dies while the spell is active, the concentration instantly ends, and the swap becomes permanent. The soul of the deceased creature passes on to the afterlife, while the surviving creature remains permanently trapped in its new body.

Using a Higher-Level Spell Slot. When you cast this spell using a Level 6 or higher spell slot, the maximum duration increases by 1 hour for each slot level above 5.