one piece card game op-02 Game: Paramount War (OP-02) Booster Box The item available is listed in the Title Bandai ONE Piece Card Game

The problem with this is that you generally cant afford to put more than a few bullets in your deck to begin with

6 Flusterstorm Japanese Silver Scroll - $196.40 We're in the middle of the pack now for value with Flusterstorm, a huge one-mana counter spell that counters a target instant or sorcery spell unless the controller pays one mana

River Bear River Bear has a reasonable enough mana cost that it can be played earlier in the game, especially in a green deck

Shambling Ghast of Alchemy Horizons: Baldur's Gate set and you have 2 copies of this card, but you also have 1 copy of the Adventures in the Forgotten Realms expansion, MTGABuddy will show you that you have 3 copies

Hopefully this drops down in price as the set becomes more accessible