Hall of Gemstone [Mirage] Warrior sacrifice Phantasmal Forces unless you

sacrifice Phantasmal Forces unless you pay {U}

Set: Portal Three Kingdoms Type: Instant Rarity: Uncommon Cost: {W} Cast this spell only during the declare attackers step and only if you've been attacked this step

put one of those cards on top of your library and the rest on the bottom of your library in any order

Shuffle Green Sun's Zenith into its owner's library

flip a coin

Hall of Gemstone [Mirage] Warrior sacrifice Phantasmal Forces unless youSet: 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.