This is one the two decks I used to rank up this season, but this one has more play to it.
The idea is to play a couple of threats early and then just counter board wipes and kill spells until you arrive at lethal. True tempo.
Pros: Good against pure control and spell based midrange control decks while being fine against aggressive strats.
Cons: Specifically bad against the Combrei Relics, and explicitly the new hotness's fault. That new 3/5 is gonna get nerfed. Also Mono Time is rough. Nothing to counter, just dudes. Can struggle with creatures that have activated abilities that work under Permafrost.
I also highly recommend Daring Gryffyn for this style of deck. Cykalis, the Burning Sand is my last suggestion as a Dawnwalker trigger.
I like the list you made, let me know if you try and of the suggestions and I would love to hear your feedback regardless of if you try any of this or not.
-D1337
This deck's primary gimmick was making defensive Market Access for the opponent costly. Grand Suppressor, Teacher of Humility, and the counterspell suite were all intentionally set up specifically for that punish timing. Either they can't get into their market at a good rate, or they get into it and telegraph when you should hold up counterspells. I don't think Grand Suppressor needs more gimmick and potentially do nothing cards when the dude is strictly solid anyway.
If I ran Belax it'd be in the board to pull with Blazing Salvo. That way I can't draw a dread Belax.
How was Xenan Obelisk for you? I found I'm not pulling it all that often, but am not sure what I want it to be.
Edit: Torn, because it makes late game Sand Warriors relevant.