Bloodbound Pact

You touch one willing creature during the casting time for this spell, channeling the power of your patron into the creature. You and the creature both roll 1d6 separately. Apply the difference in dice rolls as levels of exhaustion on both yourself and the creature. You and the affected creature will also take 2d6 psychic damage, which cannot be prevented.

For the duration of the spell, the affected creature is bestowed a portion of the power your patron has given you. Treat the creature as though it is a warlock in addition to its other classes for to determine the benefits of long and short rests. The creature gains the ability to cast the same spells that you have prepared with the same modifiers and at the same slot level regardless of its own ability scores, but only has a maximum of two spell slots available. The creature also benefits from one of your Eldritch Invocations which you choose as this spell is cast.

When the spell ends, you and the creature will again roll 1d6 separately and apply the difference as levels of exhaustion; in addition, you will both take 2d6 psychic damage. If the spell ends from any effect other than its duration running out or your dismissal of the spell, you and the creature roll 1d4 separately and apply your totals separately as levels of exhaustion. If you are unconscious, the spell is dismissed if the creature moves to a different plane of existence. If you die, the spell is dismissed if the creature moves outside of a range of 100 feet of your body.