card is Exodia the Forbidden One , because assembling all five pieces wins the duel instantly, regardless of the board state or Life Points
You simply Tool Reversal the Float Stone to your hand and then Tool Reversal the Tool (if any) on your Active Pokmon, then place the Float Stone onto the Active Pokmon, retreat and Tool Reversal the rest of your Tools in play so that theirs hosts are prepared for the new existing play conditions
Especially given the presence of cards like Dark Ritual, four is easier to hit, and even in fair decks, that one turn really does make a large difference. That took care of Aarakocra Sneak, Stirring Bard, and Vicious Battlerager
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11 Cards per Pack, roughly 1 in 3 chance of a foil per pack
It won't trigger when the third or fourth card is drawn