Gemstone Caverns [Time Spiral] Phyrexian Shapeshifter you may pay {0} rather

you may pay {0} rather than pay this spell's mana cost

or Dragon creature card from your hand onto the battlefield tapped and attacking that opponent

Set: Beta Edition Type: Artifact Rarity: Rare Cost: {4} All Swamps are 1/1 black creatures that are still lands

Set: Beta Edition Type: Instant Rarity: Common Cost: {1}{B} Destroy target nonartifact

Set: Alpha Edition Type: Instant Rarity: Common Cost: {X}{B} Target creature gets +X/+0 until end of turn

Gemstone Caverns [Time Spiral] Phyrexian Shapeshifter you may pay {0} ratherSet: 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.