CXyz Battleship Cherry Blossom (Secret Rare)

4 Level 4 monsters Once per turn, during your opponent's End Phase, if your opponent has more cards in their hand than you do: They discard 1 card. If this card has "Battlecruiser Dianthus" as an Xyz Material, it gains this effect. ● You can detach 1 Xyz Material from this card, inflict 300 damage to your opponent for each card on the field. You can only use this effect of "CXyz Battleship Cherry Blossom" once per turn.