ancient mew promo pokemon card | Display Case Extended Art for Near Mint /// Near Mint FoilCards in Near Mint (NM) condition show minimal wear from shuffling Ancient Mew – Pokemon (2000)

There are a number of reasons why (some of which I'll cover later), but at the core is this: they have plenty of individually powerful cards, along with powerful tribal bonuses

Looking at the origins of the word in African American slang, most dictionary etymologies guess its a version of junky from the 80s, but an interesting deeper dive suggests it might have started as a version of jinky in the 1970s, which seems to refer to things that wobble around, like playground equipment

Notion Thief While its no Hullbreacher, this card remains quite powerful

Its controller creates a 1/1 colorless Shapeshifter creature token with changeling