Thunder Dragonduo [SOFU-EN022] Super Rare Sea Serpent then you can add 1

then you can add 1 "Indiora Doom Volt the Cubic Emperor" from your Deck to your hand

If a Thunder monster(s) you control would be destroyed by battle or card effect

You can only use 1 of the following effects of "Prediction Princess Tarotrei" per turn

If this card in your possession is destroyed by an opponent's card (by battle or card effect) and sent to your Graveyard: You can add 1 Level 4 Machine-Type monster from your Deck to your hand

this card's name becomes that name

Thunder Dragonduo [SOFU-EN022] Super Rare Sea Serpent then you can add 1Set: Soul Fusion Card type: Effect Monster Rarity: Super Rare Attack: 2800 Defense: 0 Cannot be Normal Summoned Set. Must first be Special Summoned (from your hand) by banishing 1 LIGHT and 1 DARK monster from your GY. Once per turn, if a monster effect is activated in the hand: This card gains 300 ATK until the end of this turn. When this card destroys an opponent's monster by battle, you can banish 1 card from your GY: Add 1 Thunder monster from