Thanks to the card scripts, it features automatic chaining, card effect resolution and timing, modern and pre-errata card texts and effects (important for GOAT), replays, an advanced deckbuilder, skins, Anime & Manga & user-created cards, auto-updates, and on top of that it can be modded to host custom banlists/formats and alike
The Pokemon TCG: XY - Ancient Origins expansion transforms ancient secrets into modern battling techniques, with all-new Special Energy cards, new Ancient Traits, and Shiny versions of Primal Kyogre-EX, Primal Groudon-EX, and Mega Rayquaza-EX
All except Pikachu are reprints from recent sets
Gemcutter Buccaneer makes tons of them throughout a game, and youll probably get some bonus damage in using the Treasure as equipment, too