You imbue your essence into a corpse of a large or smaller creature that has not been dead for more than 24 hours, the creature raises as an undead and your consciousness moves into it's body. You retain your alignment, Intelligence, Wisdom, Charisma and spellcasting, otherwise you use the possessed target's statistics, but you don't gain access to the target's knowledge, languages, class features, or proficiencies. Your original body remains unconscious until the spell ends and it doesn't need food or drink.

The spell ends early if your original body or the body you're inhabiting drops to 0 hit points or you end it as a bonus action. When the spell ends the body becomes inert again and your consciousness goes back to your original body, you become stunned until the end of your next turn and have to make a DC 10 Constitution saving throw or gain a level of exhaustion.

At Higher Levels. When you cast this spell using a 6th-level spell slot, the duration is up to 5 hours. When you use a 7th-level spell slot, the duration is up to 8 hours. When you use a spell slot of 8th level or higher the duration is up to 24 hours. When you use a 9th-level spell slot, the spell lasts indefinitely.