I've played in two tournaments last week. All local. One had about 16 and the other one had 18 (due to spring states).
In the 16 people tournament, I didn't feel like there was a match up i couldn't win just because I felt like I didn't really play Stygian any real deck. I played against expensive cards but against lots of incomplete decks or home brews. I'll give a brief but not a tournament report just because I didn't feel like it pushed my rock list to it's max until the last match. In my first match he played an incomplete version of helm void combo: He did lock me up in game one with RiP + Energy Field. The next two games I blew him out with tarmorgoyf. In the second match I played an aggro elves game: I won with tons of removal, deed and charms. Third match" I played a mono blue hexproof: It consist of creatures coming into play with enchantments on them and playing tons of control spells. I was a bit worried about this match up but decay and charms did a lot of work. The fourth match was the first match that I've ever encountered with The Rock, I played against a complete Lands list. The match was a bit long but i beat him 2-0.... First match two drs just kept eating all his lands and a single goyf was just swinging in every time. The second game went for a long time but I never let him get on board and it didn't help when I extirpated his Life from the Loam and his creeping tarpit. Eventually knight came down and literally just won the game for me. I just wasted all his mazes. Also I feel like sensei's divine top is a much better choice than the sylvan library, being able to manipulate my draws was huge. The MVP card for me that tournament was Golgari Charm. I swear that card just does the work! LOL.... I love love that card in my sideboard. 2 of's. I wouldn't say no more or no less.
In the 18 people tournament I stanked that shiet up!.... smh.... I went 1-2 drop. I was a hypocrite because I vouched for rock lists to run 4 swords while i cut 1 to see how much i liked the deck and it ended up hurting bad. Rock should be playing 4 swords of plowshares. The 1cc removal just goes the distance. In my maverick match up, which by the way he was playing the new version, it would've been very handy dandy. I +2 GSZ and I didn't like it at all. Don't get me wrong, I love GSZ and feel that it's a very powerful card but I rather just have useful utility cards to abuse. I also added a Thrun main and didn't like it either. I felt as is I fu**ed the decks synergy up some how lol. But I all also lost to death and taxes. The only match I won was against miracles.
Since then i've retuned the list:
4 Swords of Plowshare is very significant.
+1 Liliana of the veil making 3 MD I feel is very comfortable and useful.
+1 Jitte, 2 MD can be devastating in any match-up. Even combo for life gain.
I also invested in a full set of foil golgari charms because that card is a literally house. I've -1/-1 a whole field of spirits and goblins. Destroyed sneak attack and numerous enchantments. And have saved my whole team to a top deck supreme verdict lol... All I can say is that I feel it's a must in most sideboards.
Oh and to update the discussion on Nantuko Monastary! Uh.... It's pretty awesome lol I didn't think it would do it's job but it has and ppl don't like it when it's animated. Against control it's sooooo nasty. I've been thinking though to replace it with Tower of the Magistrate, just to try it out. It seems like what i've said is holding true, esper is becoming relevant. So I want to see how much value I can gain from using the tower. My thinking behind it is that, nantuko can prevent jitte counters and batterskull affects but it can't fly!!! lol so when it's equipped to a spirit token i'll get srewed. That's why I feel like the tower can do more work since it'll just unequip those equipments.