The Ur-Dragon The Ur-Dragon was the headline card in one of the most expensive Commander decks ever, and not seeing a real reprint since, it still costs $40
It can 1HKO a few big Pokmon in this format (Magnezone Prime, Machamp Prime, Zekrom BLW, Kyurem NVI, Hydreigon NVI, etc
Uncommon card showcasing detailed artwork of Herdier
Moreover, losing Ceruledge is less risky than Armarouge EX, since you only lose 1 point
The stunning Special Illustration Rare artwork and Greninja fighting for the starter Pokmon top spot with Charizard adds collector appeal, and trainers are willing to pay a premium to get their hands on one of the most valuable Pokmon cards in the Scarlet and Violet era