• You must have one Arethi city controling a holy ground.
  
• You must have enough influence with Krypta in order to construct a temple for her.
  
• You must have at least one Spirit of Death unit in your army.
  
• You must have any resurrection spell.
  
• Optional to have the Meta-teleportation spell.
  
• And the Enemy supreme fighter.

A) Keep in mind that you should have enough resources for the supreme fighter's upkeep and that you have strong units to defeat the enemy supreme fighter.
B)When you attack make sure that the supreme fighter is defeated and resurrected for the Spirit of Death (Splinter of Death Ability), and after that he must die before the "Summoned" (Self-destructs) perk take place, I teletransport him near a Leviathan and enter the water so the next turn he dies.



C)The best part is when you cast the spell Elemental Resurrection and you bring back your Supreme fighter!!!
Note: You can do this to any unit that the Spirit of Death kill with the Splinter of Death Ability as long as the unit revived dies before self-destructs.