The body of the deceased burns in a bright green flame, as it burns away the soul of the deceased comes in your body. The soul makes you proficient in every skill. When you use proficiency bonus in a skill you don’t normally have you surrender your body to the soul. The soul does what you want him too. After it is done with it’s job roll a 1d100 if it’s 50 or under the soul takes control until the spell ends. Every spell slot above 2nd the soul has a -5 on taking over. Example.   3rd= 45% 4th=40% 5th= 35% 6th= 30% 7th= 20%           8th= 10% 9th= 1%