Essence Shift

You allow the soul trapped in your Pact Weapon to bolster your own, giving you additional martial and arcane prowess;

• You gain 50 temporary hit points. If any of these remain when the spell ends, they are lost.
• You have advantage on attack rolls that you make with simple and martial weapons.
• When you hit a target with a weapon attack, that target takes an extra 2d12 psychic damage
• You gain one additional attack
• You do not provoke attacks of opportunity
• Your AC increases by 2

Immediately after the spell ends, you must make a DC 15 Constitution saving throw on a fail suffer 3 levels of exhaustion, on a success only 1