Every time your creatures connect, you create a Treasure, and you outright win the game on your next upkeep if you hit 30 or more artifacts
When I browse CE/IE cards across Star City Games, Card Kingdom, and to a lesser extent ABUGames, Im observing two related trends
Daretti, Scrap Savant can use treasures as reanimation fodder, Akiri, Line-Slinger grows bigger with every treasure and Emry, Lurker of the Loch can cheat on her commander tax with them
I'll be making a very silly deck running The Speed Demon alongside Vnwxt, Verbose Host to create the ultimate draw engine - with no max hand size too
Since it's a legendary creature, there is a big chance that you won't see it much outside EDH, and the only other format that could use Myrel effectively would be Modern
Beyond Pokmon cards they carry lots of other TCGs, trinkets, and collectibles, so its a good browse even if youre not specifically card hunting