Scry 2 at the beggining of our upkeep can lead to extra land drops, but it also gives us kinda card advantage every time we Scry and that is very often in our build
While there might be an infinite combo lurking somewhere, it would be difficult since Jetfire, Ingenious Scientist Converts after using the Mana ability, and an additional 3 blue Mana is needed to Convert back
Seriously, though, the simplest answer to this question is at least 50 for Commander
The back half of this battle, Zilortha, Apex of Ikoria, makes itself and the creature you tutored for (and all of your other non-humans!) effectively unblockable
It was about forty minutes before the tournament began, and a few of us decided to play a game of Commander to pass the time
Then put all cards revealed this way that weren't put onto the battlefield on the bottom of your library in a random order