The official One Piece Card Game is developed and published by Bandai, the same company behind other popular trading card games like the Digimon Card Game and Dragon Ball Super TCG.
Each of these legendary artifacts discounts spells of the relevant color, provides a useful passive ability, and has an activated ability that synergizes with its passive ability
There are tons of ways to make Treasures these days, which also means that in some Cubes youll be able to get good mileage out of Kelloggs ability to steal opposing creatures
Or the fact that you can transfer Astrologian's Planisphere to a real creature since its an equipment, or to a creature that has synergies with +1/+1 counters placed put on it
will presumably release a new set of 200 to 300 cards every three or four months, so those playing every day should just about be able to complete one before another comes out
In a game where players are often looking for more ways to add cards to their hands, the double whammy that Heffalumps and Woozles offers can be a very useful one