![Mountain (11) [Arena League 2000] Phyrexian Demon when an opponent's monster activates](https://cdn.shopify.com/s/files/1/0570/6308/0145/files/233f1ba5-c12b-5cd7-8c31-db230c81f0b1.jpg?v=1771595594)
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when an opponent's monster activates its effect (Quick Effect): You can detach 2 materials from this card
All monsters you currently control gain 300 ATK for each Level 5 or higher monster you control
change it to face-down Defense Position
Set: Urza's Legacy Type: Artifact Rarity: Rare Cost: {3} No more than two creatures can attack you each combat
Set: The Duelist Genesis Card type: Synchro/Effect Monster Rarity: Ultimate Rare Attack: 2700 Defense: 2300 1 Tuner + 1 or more non-Tuner monsters
Mountain (11) [Arena League 2000] Phyrexian Demon when an opponent's monster activatesSet: Arena League 2000 Type: Basic Land Mountain Rarity: Rare ({T}: Add {R}.)