prime arcann runs a gauntlet :

all out fight in petranaki arena with many objects to "throw" around with TK .
fully rested and healed between rounds .

1. ezra
2. ki adi mundi
3. TPM jinn
4. RoTS kit fisto
5. ahsoka tano (vader fight)
6. savage opress
7. TPM darth maul
8. AoTC obi wan and AoTC anakin
9. ANH darth vader and asajj ventress
10. RoTJ luke (enraged)

bonus: RoTS mace windu

Luke or Mace.

Luke.

Mundi

TPM Maul maybe.

10 or the bonus.