Thunder Dragon Colossus [OP10-EN001] Ultimate Rare Trap In the end

In the end

it gains 1000 ATK

−7: You get an emblem with "Untap all permanents you control during each opponent's untap step" and "You draw a card during each opponent's draw step

or Serpent you control deals combat damage to a player

Thunder Dragon Colossus [OP10-EN001] Ultimate Rare Trap In the endSet: OTS Tournament Pack 10 Card type: Fusion Effect Monster Rarity: Ultimate Rare Attack: 2600 Defense: 2400 "Thunder Dragon" + 1 Thunder monster Must be either Fusion Summoned, or Special Summoned during the turn a Thunder monster's effect was activated in the hand, by Tributing 1 Thunder Effect non Fusion Monster (in which case you do not use "Polymerization"). Cards cannot be added from the Main Deck to your opponent's hand except by drawing them.