I run a Baral counterspells deck.
tappedout.net/mtg-decks/baral-weewoo-control/
Counterspells in a multiplayer game are a delicate thing to work with. You simply cannot counter every card your opponents drop like you can in 1v1. if you try, you'll look like a huge ass and get hated out. So, the way you can do a counterspells deck is use counters, as well as the thre𝘢t of counters, to influence the political state of the board in your favor. Counter a hoser or bounce an alpha strike, suddenly that guy who almost got fucked is your new best friend. Allow people to resolve big, scary things; just ask that they play nice, and remember that you could have stopped it, but you didn't. Meanwhile, you''re setting yourself up for a gradual win, via tokens, utility creatures. and mass bounce.
The list should be pretty easy to figure out but here's what I know I need to do:
Replace Mnemonic Wall and Archeomancer with Relearn and Pull from the Deep. Having a chump, I've found, isn't nearly as important as getting Baral's cost reduction, getting Talrand/Docent triggers, and building up Runechanter's Pike.
I need more artifact tutors. I know I have a Fabricate somewhere, I just haven't found it yet. An Isochron Scepter would be awesome in this deck.
I need to aquire/make cuts for a Crawlspace and a Propoganda, to help throw off aggro. It isn't actually huge problem, though, since nobody really wants to focus the guy who can make them never resolve anything relevant for the rest of the game.
Maybe put in 1-2 more beefy creatures, perhaps Frost Titan, Breaching Leviathan, or Torrential Gearhulk.
Aquire/replace Anticipate with Impulse, or cut something else for Impulse. Aquire a Dig Through Time
Replace Illusionist's Gambit with an Aetherspouts. Gambit is a nice meme, but it doesn't actually do anything but stall getting hit in the face.