This is because of the assumption that by running artifact lands, equipment, and generating treasures, youll be able to hit their conditions naturally through gameplay
Id likely prefer Mizzixs stormier counterpart (Mizzix of the Izmagnus), but this Mizzix is a worthy alternative
I well remember the timeshifted cards from the original Time Spiral set, where old cards in the classic Magic frame were reprinted within the product right alongside the current expansion
You should consider swapping Unleash Fury out for Wrap in Vigor, as Unleash Fury has the same effect as your commander, but to only one creature
Nissa of Shadowed Boughs The only planeswalker to make the list, Nissa of Shadowed Boughs is an interesting take on a green-black planeswalker that cares about lands
Grappling Kraken To maximize Grappling Kraken you want to spend green mana, but even without the extra land drops that are possible with green, the free tap and stun is quite good