Look: Can mimic any rarity style, marked with P
TCGplayer offers access to niche cards and collections
This is a case where the total population number and the gem rate tell very different stories: the total count says "extremely common," but the five percent gem rate says "good luck finding a perfect one." That dynamic has kept PSA 10 Ancient Mew prices surprisingly healthy relative to what you might expect given the card's perceived ubiquity

-3 Crackling Drake -2 Flame-Blessed Bolt -2 Chart a Course -3 Izzet Charm -1 Treasure Cruise -2 Expressive Iteration -4 Island -4 Mountain -2 Sulfur Falls -4 Shivan Reef -4 Temple of Epiphany -2 Abrade -1 Invasive Surgery -2 Lava Coil -2 Sweltering Suns -2 Mystical Dispute -3 Narset, Parter of Veils +4 Ledger Shredder +2 Arclight Phoenix +2 Fiery Impulse +3 Spell Pierce +2 Spikefield Hazard +2 Galvanic Iteration +1 Pieces of the Puzzle +2 Temporal Trespass +2 Hall of Storm Giants +4 Riverglide Pathway +4 Spirebluff Canal +3 Steam Vents +2 Stormcarved Coast +1 Otawara, Soaring City +1 Chandra, Torch of Defiance +2 Aether Gust +2 Disdainful Stroke +2 Young Pyromancer +2 Brotherhoods End Total Upgrade cost ~$370 Gruul Stompy Gruul Stompy looks a bit different than the challenger deck, but had some of the same cards and a similar plan
After sketching for a while, I went to two options that I thought would be the best ones to communicate everything I wanted
Burgeoning Size 8.8cm x 6.3cm, Fit perfectly into KMC perfect fit sleeve