The second card to have been spoiled is a very interesting Eldrazi spell called Coax from the Blind Eternities, which allows players to wish for Eldrazi spells that are either in exile, or from outside the game (such as in your sideboard)
Interestingly, Phyrexian Nissa has been deliberately drawn with exactly the same pose as she had in Nissa, Who Shakes The World , a callback to her former, probably even more terrifying (if you played Standard at the time) card
This was going to be a time to rely heavily on the expertise of others to pull everything together
Spore Frog to fog every turn, Seal of Primordium to keep wiping out artifacts and enchantments, Pernicious Deed to keep board wiping, Plaguecrafter to keep them sacrificing creatures or Planeswalkers its strong stuff when it gets going
Im on the opposite end of the spectrum and flat-out refuse to play basic lands for which I dont own the original painting used to illustrate it, a quirk Ive written about previously
It seems it's not just an individual instance however, the affected creatures are like this for everyone