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
Shocks and fetches feel marked for future handling elsewhere since we seem to be returning to Ravnica in the fall and a Modern focused Masters set is likely inevitable in 2019, whether or not they theme it that way
Drain/Gain Youve got to expand beyond Simic, but cards like Zimone and Dina and Queza, Augur of Agonies pay you off in a different way for card draw
Silver-Fur Master and Prosperous Thief were designed as ninja payoffs, but work with rogues, too
3rd Party Italian Repack Crimps: The zig-zag crimp pictured directly above comes from a small Italian company that sells repacks
You draw a card and discard a card every time shes tapped, and with enough lesson cards in your graveyard, all noncreature spells cost one mana less