Gemstone Caverns [The List] Brush Your opponents can't cast spells

Your opponents can't cast spells of the chosen color

Activate only before the combat damage step

legendaries

if you control ten or more Treasures

Set: From the Vault: Realms Type: Legendary Land Rarity: Mythic Boseiju

Gemstone Caverns [The List] Brush Your opponents can't cast spellsSet: The List Type: Legendary Land Rarity: Rare If Gemstone Caverns is in your opening hand and you're not the starting player, you may begin the game with Gemstone Caverns on the battlefield with a luck counter on it. If you do, exile a card from your hand. {T}: Add {C}. If Gemstone Caverns has a luck counter on it, instead add one mana of any color.