It's quite mathy, but he goes into a great deal of detail and explains his rationale, while not ignoring the realities of the game (there are one-mana Cycling cards, cards that fetch lands, cards that tap to add mana which aren't lands, and more.)
And it has all five modes if you're playing all colors
And, while it'll most likely produce an absurd quantity of cards drawn, it's worth considering to what extent we'll be able to use all of those cards, if our resources have to be invested in defending this Leviathan from continuous removal attempts
Let us break it down for you
These Starter Kits tend to release fairly irregularly, with annual refreshes and the occasional pack to accompany certain, specific sets, as was the case with Lord of the Rings and now, Assassins Creed
The fact that it can whiff completely is a bit scary as well