You want to hinder your opponent and challenge any of the opposing characters using your cards to do that
rather, its a Job that is called None. As such, Bartz [1-081R] can acquire the None Job, and Hashmal, Bringer of Order [2-087R] can use None as the named Job
More specifically, publisher Wizards of the Coast has noted that "cards with the MKM set code are permitted in the Standard, Pioneer, and Modern formats, as well as in Commander and other formats." As per usual, you can get this set's cards via booster packs or premade Commander decks
not only does it lose the restrictions on what it counters, it always draws a card with Yshtola out, on our opponents turn, to boot
If your opponent tries to rules lawyer you, the untap effect isnt conditional on the discard if your opponent cant discard, the untap still happens
So you're not really ramping after all - your extra mana is all too fleeting, which is what makes this a red ability