Spoiler warning. This page gives away the puzzle from 2 November 2025. If you have not played it yet, try it first – five guesses, and it is still there.
A watapon that special summons itself when added to hand.
Type: Effect Monster
Set: Legendary Collection 3: Yugi's World Mega Pack
CardMarket price: 0.64$
Text: If this card is added from your Deck to your hand by a card effect: You can Special Summon this card.