The trick here is to exile a problem creature an opponent controls but also exile a card from your graveyard (assuming you dont need the graveyard hate)
At the end of the day, it's card advantage, and for preconstructed decks like Limit Break, that's one of the biggest roadblocks to success
It is much less reliable for final rules MTGPress proxy printing became popular because it solved a very specific Magic problem: players wanted a fast way to turn a decklist into printable proxy TLDR Fan-made Magic cards feel real when they follow the same invisible rules that make official cards readable, balanced, and playable
It doesnt give you the same hand-sculpting power as Brainstorm, but its generally a stronger effect because it comes with the shuffle
FCA cards show up in Play and Collector boosters
But, the best avenue to get the cards you want, without spending an absolute fortune, is by purchasing singles, so hopefully this was a handy guide for you