The bigger issue is that, as we talked about before, it's not just (or even primarily) Reserved List cards being counterfeited
No more struggling to slide cards in from the top
The probabilities of these decks are favorable, which in turns allows these decks to work favorably
Being a Commander card, Archivist of Oghma is not legal in many other set-specific formats such as Modern and Pioneer, but it will be a hit in the Commander scene for years to come, much like how Opposition Agent has become a common sight in many black decks
The key rules nuance is that the creature receiving counters is not targeted (the target is chosen on resolution of the trigger, which means it cant be fizzled by a removal spell in response), and you can put more -1/-1 counters on something than it would take to kill it (which matters when youre happy to cash in a small creature)
It draws you cards if you simply remove a supply counter from it and pay two mana