Hall of Gemstone [Mirage] Oldschool " This effect lasts indefinitely

" This effect lasts indefinitely

You gain life equal to the life lost this way

our arrival has altered the landscape

Set: Scars of Mirrodin Type: Artifact — Equipment Rarity: Mythic Cost: {3} Equipped creature gets +2/+2 and has protection from green and from blue

(They can't be blocked except by artifact creatures and/or black creatures

Hall of Gemstone [Mirage] Oldschool " This effect lasts indefinitelySet: 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.