Underground River [Seventh Edition] Dragon[×2] shuffle it into your Deck

shuffle it into your Deck

After you Synchro Summon this card

Set: Duel Terminal 3 Card type: Tuner Monster Rarity: Common Attack: 400 Defense: 200 You can send this card from your hand to the Graveyard to select 1 face-up "Fabled"' monster you control

Set: Black & White: Dark Explorers Type: Metal Rarity: Holo Rare Retreat cost: Colorless

Set: Beta Edition Type: Creature — Serpent Rarity: Common Cost: {5}{U} Sea Serpent can't attack unless defending player controls an Island

Underground River [Seventh Edition] Dragon[×2] shuffle it into your DeckSet: Seventh Edition Type: Land Rarity: Rare {T}: Add {C}. {T}: Add {U} or {B}. Underground River deals 1 damage to you.