You need more black removal cards. I'd get rid of Avoid Fate , seeing as how it's really limiting. I'm guessing the thing you're most worried about is spells that destroy your creatures; if that's the case, get more of Asceticism . I'd say add Doom Blade , also Consume the Meek would be really good since you have mostly high cost creatures.

If you do add more Asceticism, you could try using Mycoloth . Sacrifice your creatures and then regenerate them for some free counters.

I'd add 3x Woodland Cemetery - no point in not having as many as you can, and you probably won't have an issue with tapping since you'd only have four, and if so it won't be that big of a deal.

Sorin Markov seems kinda out of place... if you have a Planeswalker, you want him to really fit into your deck. I can't find any that match awesomely, but maybe Liliana Vess or Vraska the Unseen .

Scute Mob seems like it would be epic in this deck. You almost always have a lot of land and it's a one drop, so really convenient.

I'd get rid of Rancor . I know it's good, but it doesn't seem to make much difference. Either your creatures are out of control powerful so it doesn't matter, or they're too weak for it to make a difference.

I didn't even think of this before - is you have Vraska the Unseen and a creature with a lot of power, that could be a win right there. Have three token and a creature with like 15 power attacking - if your opponent can't block of them, they lose pretty soon.

Would Murder be better than Doom Blade considering one has a restriction on it and the other simply destroys whatever you want?

I might get more Asceticism down the road, I already spend some money on the cards I'm getting already. Like Woodland Cemetery , that's going for 7 dollars, so getting 3 total is kind of on the back burner for now.

Also I know Sorin Markov seems out of place. But it's kind of like having more than one way to destroy basically. Different plans of attack are harder to defend I would think. Like if I'm at a stalemate sorta like we've had before, at least I could still do some damage and such.

Or Putrefy .

Oh yeah, Putrefy is awesome. Way better than Doom Blade or Murder .

I just thought you were making the deck you wanted someday, lol. I usually get lands last, anyway, especially if it's a decent flow now.