Iconic Cards: Counterspell, Ponder, Damnation, Jace, the Mind Sculptor Popular Decks: UW Control, Jeskai Control, Taking Turns, Esper Control 3 Midrange Midrange decks are popularly said to solve problems, not create them. In other words, these decks are sort of designed to be able to win against every archetype, although they wont bulldoze over anything (the way aggro often wrecks control, for example)
This opens up some serious possibilities, especially because of the artifact shenanigans that you can pull off
One of the main reasons why Theros Beyond Death Booster Boxes are so popular is because they contain a lot of rare and mythic rare cards
Since state-based actions aren't checked until after the ability is done resolving, your hand will be chock full of cards and Nin will have toughness equal to that chock-full-number plus one