Thunder Dragon Colossus
Thunder / Fusion / Effect
DARK / 
8"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. If this card would be destroyed by battle or card effect, you can banish 1 Thunder monster from your GY instead.
2600/2400
CARD ID: 15291624
STATUS TCG: Unlimited
Powered by yugioh.wikia.com
| TCG Set | Symbol | Rarity | Low | Avg | Trend | |
|---|---|---|---|---|---|---|
| 2019 Gold Sarcophagus Tin Mega Pack | MP19-EN183 | Ultra Rare | - | - | - | |
| OTS Tournament Pack 10 | OP10-EN001 | Ultimate Rare | - | - | - | |
| OTS Tournament Pack 10 (POR) | OP10-PT001 | Ultimate Rare | - | - | - | |
| Soul Fusion | SOFU-EN037 | Secret Rare | - | - | - |
Just like Thunder Dragon Titan, whose design is derived directly from the original Thunder Dragon, this card is an upgraded version of Thunder Dragondark, which in turn is a retrained version of that monster.