If you are in a game state somehow where you can continuously pump out 2/2 tokens, then hes very difficult to remove in the format
She already stops opponents from drawing more than 1 card a turn, so imagine emptying their hands and leaving only 1 card each time
The Manga alternate art rare cards are extremely hard to find, being in roughly one in four booster boxes (thats right: boxes, not packs) of One Piece cards
Getting things back from your graveyard is always good, it helps you recover, helps you stabilize, shes just great to have
Having a mana pool is nice to see as it allows for various interactions on both players turn compared to the Pokemon card game for example
Technically, this is still true today, however, one major detail has changed