Serra's Sanctum [Urza's Saga] Fiend/Effect or any face-down Defense Position

or any face-down Defense Position monsters

If any of those cards are Fighting Energy cards

Attack 2: [M+] Altered Creation GX

Number: EXVC-EN043 Rarity: Ultimate Rare Attribute Monster Type/Card Type: EARTH Machine/Synchro/Effect Monster Level: 12 A / D: 4000 / 4000 Description: 1 Tuner Synchro Monster + 2 or more non-Tuner Synchro Monsters

“Hall of the Storm Giant” becomes a 7/7 blue Giant creature with ward 3

Serra's Sanctum [Urza's Saga] Fiend/Effect or any face-down Defense PositionRarity: R Card Type: Legendary Land Description: T: Add W to your mana pool for each enchantment you control. TCGplayer Tip: Much like Gaea's Cradle and Tolarian Academy, which are also from Urza's Saga, Serra's Sanctum taps for an absurd amount of mana in any deck built around it. It doesn't take many enchantmemts to break this card in half.