Magic cards can be valuable due to their rarity and utility in gameplay
Overall, if you pick good themes (popular character, limited availability, strong artwork) and hold through time, Japanese cards often offer compelling value upside
No Pokmon is going to tear an ACL
As far as I can tell, there's no difference in rewards between the two, it's just a tacit acknowledgement that you're up against opponents who'll probably know their stuff, or not
Use high picks on creatures with built in card advantage like Gravedigger, Liliana's Specter and Prodigal Pyromancer
Especially as fans go to dig out their old cards in storage for a bit of nostalgia, some may wonder if a few select cards might bring in a ton of cash at auction