I think the baseline for a master set is one copy of all regular cards and one copy of every reverse as Quuador mentioned
Heck, hes still one of the best planeswalker commanders
While modern Charizard cards might never eclipse the base set's iconic design, their values aren't as far apart as you might expect
I have however given some thought to that attitude and can probably in fact make a pretty good case for why it would be well in Wizards interests to consider cube players as well as vintage, modern, EDH, standard, draft, and the rest
Showing the top 97 most valuable Black cards
Although the number of cards in your hand will be greatly reduced, if you Synchro Summon Fabled Ragin, you can both replenish your hand as well as aim to deploy further