Exile can be very relevant in this set, as there are plenty of annoying recursion cards, like Dutiful Griffin, Back for Seconds, and Edgewall Inn, among many others
When people think about control counterspells in Modern, the first one that comes to mind must be Cryptic Command
Lukas Blohon's winning deck at Pro Tour Eldritch Moon , a control deck, featured her as the most expensive card
Agents of S.N.E.A.K
Its ability may be activated, even if it was activated a previous time it was on the battlefield
Often the engagement then actually gets in the way: you end up ticking off specific tasks within a match, rather than playing the game itself for its own good, and only come back for extrinsic rewards: skins, XP, packs, or whatever else