TL;DR: One Piece TCG's official base rarities are Common, Uncommon, Rare, Leader, Super Rare, Secret Rare, and Special, with premium variants layered on top: Alternative Art, Treasure Rare (TR), and Manga Rare (rarest, with very low unpublished odds)
GET READY TO CHALLENGE: As with any Disney adventure, youre bound to run into a few obstacles, whether it's a villain, a rival, or some friendly competition
Combo decks like Azorius Omniscience are something we want to exist in Standard, but when too strong, they warp the format around them and reduce the number of viable decks
Legacy is not the reason, but the reason is related to why the card is good in Legacy
While the "it's slow and bad in a lot of matchups" argument might be reason enough to consider releasing [[Umezawa's Jitte] from Modern jail, it would at the very least show up in sideboards to punish people for playing small creatures