Gemstone Caverns [Time Spiral] Myr Set: Alpha Edition Type: Enchantment

Set: Alpha Edition Type: Enchantment Rarity: Rare Cost: {2}{R} Whenever a player taps a land for mana

Set: Champions of Kamigawa Type: Legendary Land Rarity: Rare Boseiju

Set: Premium Deck Series: Slivers Type: Creature — Sliver Rarity: Common Cost: {1}{R} All Sliver creatures have haste

you might as well trade it for something else

Set: Modern Masters Type: Creature — Lhurgoyf Rarity: Mythic Cost: {1}{G} Tarmogoyf's power is equal to the number of card types among cards in all graveyards and its toughness is equal to that number plus 1

Gemstone Caverns [Time Spiral] Myr Set: Alpha Edition Type: EnchantmentSet: Time Spiral 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.