Thunder Dragon Colossus [SOFU-EN037] Secret Rare Normal Spell or monster effect

or monster effect

if this card is Special Summoned this turn: You can add 1 "Sky Striker" Spell from your Deck to your hand

while this card is in your GY: You can add this card to your hand

If this face-up card you control leaves the field because of an opponent's card effect: You can add 1 "Omega Summon" from your Deck to your hand

Thunder Dragon Colossus [SOFU-EN037] Secret Rare Normal Spell or monster effectSet: Soul Fusion Card type: Fusion Effect Monster Rarity: Secret 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. If this card