Hall of Gemstone [Mirage] SM42 Set: XY: Base Set Type:

Set: XY: Base Set Type: Grass Rarity: Holo Rare Retreat cost: Colorless

Set: Extreme Victory Card type: Tuner Monster Rarity: Super Rare Attack: 0 Defense: 2300 When you take 2000 or more Battle Damage your opponent's monster's direct attack while this card is in the graveyard

except "Spellbook of Secrets"

this card's ATK is halved during damage calculation

and equip it to this card

Hall of Gemstone [Mirage] SM42 Set: XY: Base Set Type:Set: Mirage Type: World Enchantment Rarity: Rare Cost: {1}{G}{G} At the beginning of each player's upkeep, that player chooses a color. Until end of turn, lands tapped for mana produce mana of the chosen color instead of any other color.