Like with any card game, the best and easiest way to get started with One Piece Card Game is with one of its pre-constructed starter decks
If a second Elesh Norn, Grand Cenobite comes under your control, you'll put one into its owner's graveyard due to the "legend rule" at the same time that any of your opponents' creatures getting -4/-4 are put into their owner's graveyard for having 0 or less toughness
Jace's Erasure turns every draw into a mill effect that slowly eats away at your opponents library
Players gain points for participation, bringing friends to play, and match wins to earn special rewards: a Chocobo art print at 10 points, and a Chocobo Pinfinity AR Pin at 20 points
The type of collection I have I collect to build I go from having 6 to 15 decks assembled for EDH - this fluctuates a lot as sometimes I will build a deck, play it 5 times, and disassemble it again within a week
It is not a bad idea for those who want to get rid of the clutter of ordinary cards and make money