Gemstone Caverns [Time Spiral] TG04 return those cards to the

return those cards to the battlefield under their owner's control

Set: Structure Deck: Invincible Fortress Card type: Effect Monster Rarity: Common Attack: 300 Defense: 2000 Double any Battle Damage your opponent takes when they attack this monster

Set: Ignition Assault Card type: Xyz/Effect Monster Rarity: Secret Rare Attack: 1000 Defense: 2500 2 Level 4 monsters You can discard 1 "Plunder Patroll" card

Set: 2014 Mega-Tins Mega Pack Card type: Normal Spell Rarity: Secret Rare Send 1 face-up monster you control to the Graveyard

Gemstone Caverns [Time Spiral] TG04 return those cards to theSet: 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.