Thank you for all your suggestions, HexStar!
Based on them I made these changes:
- Graveborn Muse: card draw with Ragers and Visionaries is consistent enough, plus your other advice - Genesis Hydra - is sooo so good, I really don't know how I missed it all this time...
- Shadowborn: it's not a deck for him
- 2 x Tormentors: I've decided to listen to everyone's advices and cut them. They're still a backbone of my MBC though
- Terra Stomper: I've cut it and immidietly run into mono-blue deck
Still won, though. But I'm still not sure, is it a right decision or not. Uncounterable 8/8 trampler for 6 is too good
+ 2 x
Genesis Hydra: man, this is the best addition ever! She saved my ass so many times already! Tried 1 copy and after two games I've immidietly decided to add the second one, this thing is absolute beast
+ 2 x Cultivate: I've been using it mostly not for color fixing or ramp (which Guildgates is there for) but to trim my library from lands. Works good for now
+
Stormbreath Dragon: would you believe that I had not run into him in all yesterday's matches? Still have to test him
+
Vengevine: just to try it. Actually, it works surpriingly well. Helps to keep pressure from the mid-game to the late - when I can cast Visionery+Rager or 2 Ragers/Visioneries to summon it back. He's first to cut, though
Also, I've added 2nd Rune-Scarred, removed another Undying Evil (still run 2) and added 4 more Guildgates. Last addition worked not so well for me - it slowed down my early game even more, so I'm thinking about going down to 8 GG again.
Ground Assault sounds a little underwhelming in tri-colour, but I wonder how that deck kept it's draw up. Lacking Blue splash sucks for control :[
Why is that?.. It works perfectly for me - killing Baneslayers and other 5/5 and 6/6 for just 2 mana. If you can support consistent land draw (vial Cultivate, Satyr or any other tools), that thing is monstrous for such a little cost. If you pack at lest 8 Guildgates, color requirements for it is just silly.