You can discard this card; add 1 "Bonding" Spell/Trap from your Deck to your hand. If this card is Normal or Special Summoned: You can target 1 "Hydrogeddon", "Oxygeddon", or "Duoterion" in your GY; Special Summon it. You can only use each effect of "Duoterion" once per turn.
![Duoterion [SGX2-ENC10] Common](http://www.cardmerchanttakapuna.co.nz/cdn/shop/products/e1f09d2a-dd25-55a3-b32e-de518abc3d92.png?v=1698526514&width=1445)