Level 3
Entangled Soul.
(INT/Safe Rest) Action: gain 3×LVL temp HP and summon an Entangled Soul (temp HP lost when you're , or combat ends). Your Entangled Soul counts as an ally and disappears when you lose these temp HP. There can only be 1 Entangled Soul at a time. It has all of your actions, and any damage it suffers returns to you. (1/round) Free action: You can command it to take 1 action.
Mirror Image.
When both you and your Entangled Soul are adjacent to a target, you both have advantage on attacks against it and +INT Defense against its attacks.
Level 7
Severed Soul.
While you are out of Entangled Soul charges, attacks against you have advantage, but your attacks deal +3×INT damage; they also crit on hit when made with Coordinated Strike.
Unshakable Bond.
You can command your Entangled Soul to take 2 actions.
Level 11
Determination.
(1/Safe Rest) When you roll Initiative, you may expend 1 Hit Die to use Entangled Soul even when you are out of charges. Using it this way does not nullify Severed Soul.
Level 15
Perseverance.
(1/Safe Rest) When you are reduced to 0 HP and , use Entangled Soul for free even when you are out of charges (does not nullify Severed Soul). You don't suffer any Wound as long as the temp HP from Entangled Soul remains. You do not need to make the STR save to command the Entangled Soul.
Unshakable Bond (2).
You can command your Entangled Soul to take 3 actions, 1/round.
