I added astrolabes as the mana was just so clunky, I found myself losing winnable matches simply by fetching and getting wasted or not fetching etc. Astrolabes massively improve the mana, and you can use fetches optimally. So the deck gets going more often, basically. Dack, JTMS, astrolabe, teferis all give lot of draw without Braisntorm/Visions, so I went to 3 Stasis- one turns up sooner or later, and you rarely to never want 2 in hand.
Swapped a COT to a tomb, the deck has more control than ever without stasis. A couple of sol lands allow for a little more in the way of options early game.
Added two swords to plowshares, and an extra tundra.
Dropped ashiok as the Karn wishboard contains a feldons' cane now, more often than not the Karn is what locks the game- the ashiok was insurance in case I run out of wincons like jace ultimates and cannot self tuck big teferi. With two karn and a lot of bin hate ashiok is redundant. Astrolabe, Karn, who knew?
I dropped white leylines, and made Karn more a focus of the deck, the wishboard extending to even Black Vise- for when the game is locked and time is an issue.
I could run veil of summer, as it is nuts, but don't have the spare paper trop.
The Force of Negation in the board could be a flusterstorm or Pyroblast, meta depending.