I have further assumed a distribution of 2 slots to artifacts and colorless cards, 2 each for the five colors, 2 gold cards and either a land slot or an extra gold or artifact/colorless card
I think the non-rotating cards from Arena are a big enough difference between paper and digital Standard
The trick, of course, is making sure your high-mana finishers are on top of your library when you draw them
It found quite a bit of use in various ramp decks, although with the lack of Eldrazi, it will probably fall out of favor
7 Ukkima, Stalking Shadow A Whale Of A Wolf Relationships are a tough act to balance, as evidenced by just how much Ukkima, Stalking Shadow carries their partnership with Cazur, Ruthless Stalker