Worn Powerstone [Commander Anthology Volume II] XY37 Once per turn (Quick Effect):

Once per turn (Quick Effect): You can detach 1 Material from this card

Set: Unlimited Edition Type: Artifact Rarity: Uncommon Cost: {1} Whenever a player casts a blue spell

Set: Gladiator's Assault Card type: Normal Spell Rarity: Secret Rare Attack: 0 Defense: 0 Special Summon 1 Normal Monster from your Graveyard in face-up Defense Position

you can conduct 1 Pendulum Summon of a "Zefra" monster(s) during your Main Phase this turn

Set: Dark Beginning 1 Card type: Effect Monster Rarity: Common Attack: 2500 Defense: 2400 You can only activate this card's effect during your opponent's damage calculation

Worn Powerstone [Commander Anthology Volume II] XY37 Once per turn (Quick Effect):Set: Commander Anthology Volume II Type: Artifact Rarity: Uncommon Cost: {3} Worn Powerstone enters the battlefield tapped. {T}: Add {C}{C}. Even a fragment of a powerstone contains within it not just energy, but spacevast dimensions trapped in fragile crystal.