Since only 68 copies exist, there are even fewer at a top grade
C Common Gravekeeper's Chief X DARK Level 5 [ SpellcasterEffect ] ATK 1900 DEF 1200 You can only control 1 face-up "Gravekeeper's Chief"
Whats good in Commander is often terrible everywhere else, so having a surplus of these in a Standard set - or even one meant for Modern and beyond - often detracts from the number of cards thatll actually see play in that format
While a real strategy is forming, efficient green spells paired with a monster of a commander to tie it all together, we're still a thematic deck centered on Bears
If these mistakes had been caught before publication, they would have had a chance to fix the issues and to learn from their mistakes, either with WotC or elsewhere
Under magnification, these are often the difference between a 9 and 10