Chthonian Alliance [EEN-EN044] Ultimate Rare Ancient Sanctuary each player's Life Points become

each player's Life Points become half the combined Life Points of both players

Set: Enemy of Justice Card type: Effect Monster Rarity: Ultimate Rare Attack: 1600 Defense: 0 When this card is face-up on the field

Duelist Saga and Maximum Crisis both have great Rank 4 Xyz Monsters that are perfect fits for this strategy

Set: Enemy of Justice Card type: Quick Play Spell Rarity: Ultimate Rare Select 1 monster on the field

Chthonian Alliance [EEN-EN044] Ultimate Rare Ancient Sanctuary each player's Life Points becomeSet: Elemental Energy Card type: Equip Spell Rarity: Ultimate Rare Attack: 0 Defense: 0 Increase the ATK of the equipped monster by 800 points for each other face up monster on the field with the same name as the equipped monster.