Duoterion (LEDU-EN037) - Legendary Duelists 1st Edition Condition:Heavily Played you can activate it this

you can activate it this turn

the Festive Fox of Fecundity" once per turn

but if it does so using this effect

Your opponent must select 1 card and will be added to your hand

Duoterion (LEDU-EN037) - Legendary Duelists 1st Edition Condition:Heavily Played you can activate it thisTypeDinosaur Effect Monster AttributeWATER Level Rank5 ATK DEF2000 1400 Card TextYou 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.