If youre not sure why this matters, let me refer you to fetch lands
For most situations, especially if maximizing value is your goal, PSA is the safest bet
Getting format-defining cards isnt as tough as it used to be thanks to these, and youll be rewarded with them just for opening other packs something youre already doing
Magic: The Gathering has built up an astounding back catalog of cards across its lengthy history
Yeah, theres still a bit of guess work left, such as with the Weakness and Retreat Cost and the Pokmon 25 logo but still, there is a LOT removed from just mixing those cards together, and whats left is damn near trivial to remove
You could also sacrifice a unique creature type to get a changeling, so it can be used as a neat way of getting Morophon onto the table, if someone gives you a sprit, beast or elephant token