You win a challenge with Uro, but no one enters it into MTGtop8, SMIP doesn't list it on their scorecard, and it's like it doesn't happen. SMH.
Joking aside, I think this card has significant Modern and perhaps Legacy implication, but for Vintage, the delay in drawing a card is pretty significant. You can kind of compare it to Serum Visions and Preordain if you've ever played Visions like in the VSL lists - scrying into the counterspell/Dredge hate/piece of Power you need and not being able to cast it is rough. A Preordain restriction would be interesting for the format as the remaining cantrips are much more flawed because of this (not advocating for it, but it's true based on my play experience).