Gem-Knight Obsidian [HA06-EN031] Super Rare Synchro/Tuner/Effect Monster if this card has a

if this card has a "The Phantom Knights" card as Xyz Material

if any player's monster would be destroyed by that battle

Set: Duel Power Card type: Effect Monster Rarity: Ultra Rare Attack: 2200 Defense: 2000 If this card is in your hand or GY: You can Tribute 2 monsters

"Right Leg of the Forbidden One" or "Left Leg of the Forbidden One"

Set: Code of the Duelist Card type: Link/Effect Monster Rarity: Super Rare Attack: 1400 2 EARTH monsters All EARTH monsters on the field gain 500 ATK and DEF

Gem-Knight Obsidian [HA06-EN031] Super Rare Synchro/Tuner/Effect Monster if this card has aSet: Hidden Arsenal 6: Omega Xyz Card type: Effect Monster Rarity: Super Rare Attack: 1500 Defense: 1200 If this card is sent from the hand to your Graveyard: You can target 1 Level 4 or lower Normal Monster in your Graveyard; Special Summon that target.