If you're new to the game entirely, the One Piece TCG beginner guide covers the rules and card types before diving into rarities
The leading card itself is fantastic for punishing high-energy decks, which at this point is most decks in ranked play, but especially great against Grass-type decks, as it single-handedly wiped the Celebi ex/Serperior combo from the meta
Every time an opponent draws a card outside their normal draw for the turn, Xyris summons a 1/1 Snake token: an ability that can easily get out of hand in the value-hungry Commander format
Hybrid Custom System Combine multiple methods by organizing first by set, then by type within each set, finishing with rarity hierarchy
Seeing your opponent ahead in the game will make him angry
Saturdays often feature special events or restocks