one piece card game english booster box OP-07 – 88 Cardhouse All cards in this latest release are One Piece TCG [OP-01] Romance

Magician, Mannadium, and Odd-Eyes are all covered, and there are also new strategies waiting to be unlocked for players who want to update and improve their dueling tactics

"Bahamut Bomber" attacks and destroys "Heatleo" (Soulburner: 1800 600 LP)

A player could receive more or fewer reward cards than one, depending on the card

No, transforming a creature doesnt remove it from combat , unless its exiled and then brought back like with the flipwalkers

Since there are fewer copies of Greninja ex out in the open, that's likely caused the price spike but as the set ages, it'll probably level out to a more reasonable amount