one piece eb02 booster box english EB-02 Anime 25th Collection Pack (Japanese) 02] includes many ways to strengthen Leaders from past packs Extra Booster: Anime 25th Collection

They Meld into a Creature which probably also makes your opponents sad

Black Uncommons Demonic Tutor $120/$60 Hypnotic Specter $80/$40 Animate Dead $50/$20 Sengir Vampire $40/$20 Black Knight $15/$6 Netting Imp $7/Unlisted Evil Presence $6/Unlisted Sacrifice $6/Unlisted ALL OTHER BLACK UNCOMMONS $5/$1 The top three cards on this are all Cube staples, but Demonic Tutor and Animate Dead are also playable in everything theyre legal in

It becomes a one-sided Skill Drain , or even a one-sided Dimensional Fissure if all three are on the board

Lost Box or Gardevoir

The OPTCGSim does not use official assets of the One Piece Card Game and is completely free to use

Still, this last part should be up to the discretion of the event organizer, but chances are that this isnt something you should expect to see in a Pro Tour or any competitive setting