All "Jack Knight" monsters on the field gain 300 ATK/DEF. Once per turn: You can discard 1 "Jack Knight" monster or 1 "World Legacy" card; draw 1 card. You can banish 8 "Jack Knight" monsters with different names from your GY and/or face-up from your field; send all cards in your opponent's hand and Extra Deck to the GY.
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