While you can tune engines to draw extra cards and control the game, some tactics are simply more consistent (bunnies can easily overwhelm an opponent, for example, thanks in part to the new Offspring mechanic)
It feels bad to say, but I2I might be more unhelpful than helpful
Not only does it make all your defender cards cantrip when they enter the battlefield, but it is a card that lets your defenders attack
Well, because they have such a huge operation selling individual Magic cards (along with boxes, decks and everything else) both online and through their retail locations, they have massive amounts of sales data that helps reliably determine current values
Without access to white, the best blink spells in the game (like EphemerateEphemerate) are out of reach - and there aren't that many mono-blue blink spells we can reach for as a replacement
Jace earned his reputation by standing shoulder to shoulder with the best MTG cards ever printed during Magics most control-heavy era