Competitive cards tend to fall into one of a few categories: they offer game-changing effects, enable consistent draw/search power, provide strong single-prize or multi-prize value, or have synergy with existing top-tier decks
On this occasion, the card was offered up to the highest bidder via online auction house Goldin and a Guinness World Records Adjudicator was at the event to ensure the sale had made it the most expensive Pokemon card, and additionally the most expensive trading card at auction
I think Yarok goes in basically every Muldrotha list and Muldrotha goes in basically every Yarok list
Drafts pre-game phase involves players opening a Draft Booster and choosing a card from the pack, then passing it to the next player
The leader was such a fun time to play with its gimmick of being able to use red Event cards to buff your attacks or even use them as counters
The flashback in particular makes it attractive for a midrange style deck, where the reanimation is something of a B plan