Force of Will Force of Will is the gold standard for free countermagic (and perhaps also for funny proxies!), and it's Magic's best free spell overall
While there are cards I personally like and I think will make an impact, ultimately it will depend on how things in Standard shake out over the next two months
Its interesting that you draw and get to use the cards first while draining your opponents in the process
I've got a few impulse draw triggers in the list, but it's safe to say that card draw will be a challenge without including cards outside of the Spider-Man set
While it can also benefit your opponent in two-player formats, it becomes highly exploitable when your deck is built around massive creatures
Players sometimes justify its inclusion through logic such as "If you mill six cards from your own deck, and the only flashback card that you turn over is a Think Twice, you're still going to be even on cards." But in green-blue-black mill-yourself decks that are actively looking to get as much of their library as possible (and in some cases all of it) into their graveyard, finding ways to continue to mill yourself is absolutely crucial