The instant costs four, you exile a targeted nontoken you control, the top two cards, and then cloak them as 2/2 face down dorks with ward
Time to use your sky bison to airbend an Eldrazi titan or two
While resolving Rottenmouth Viper's triggered ability, your opponent chooses a card to be discarded without revealing it, chooses a nonland permanent to be sacrificed, or chooses to do neither
Or an Infinity Gauntlet card with a specific alternate win condition
The set is already making waves by bringing back five shock lands like Godless Shrine and Stomping Ground
Instead, I think it bodes well for the way Wizards of the Coast is handling this set that a Final Fantasy fan would be able to accurately predict what some of their favorite characters might do