Deal 4 damage to each creature and each Planeswalker
I know 4 drop sweepers are a thing if the past, but this one hits walkers also. Possible SB over supreme verdicts or a mix of the 2? It does hit your own walkers so maybe more in something new or a Blood moon deck? Just seems viable somewhere to me.
I meant Echo more as the final key when your down to stuff you don't want to exile, or, if for some reason it stalls out. I wouldn't run more than 2. Wheel and Windfall, even tinker Jar/Bot as alternt win con are still viable. A one of Bazaar of Baghdad might even be good with Frantic Searches, Echo, and this new card. Essentially exiling your deck down to the perfect X cards then Echo, or just brain freeze as mentioned before.
I like the Ashiok idea as well, but in a shell with Cabal/Dark Ritual. With the Intuitions you could run 1 of each, so it's either fuel for early Ashiok/Jailer/Discard, or Yawgmmoths Win Fuel for Tendrils later.
Also I would run Sower of Temptation over Control Magic in SB and as a 2 of. Run Fatal Push over the third IMO. With FoV and FoN running rampant CM seems no good.
Good luck with it.