+1 for knowing where your priorities are. Overall this looks like a good deck and it has potential to break into top 4 but not to take 1st.

So I think Brimaz, King of Oreskos is really unplayable outside of straight orzhov or white weenie. double white in 3 color with only 3 Sylvan Caryatid not good. Same with Polukranos, World Eater actually descent card, but would be hard to hit. You don't really have a main color which is bad and good. Black probably is it more than the other two, but idk.

Courser of Kruphix another good card, but running 3 colors and no major color double green turn 3 I think will be another tough hit.

Then you are also kind of stretching it going Banishing Light one white (not so bad) or Hero's Downfall or Underworld Connections or Brimaz, King of Oreskos into Advent of the Wurm on the curve. Just look at the symbols, not likely able to hit both on curve, even with proper land fixings. Then you go to either Blood Baron of Vizkopa not bad or Obzedat, Ghost Council which I think will be really hard to hit.

I think you need to add a Sylvan Caryatid is a must 4 of if ur running 3 colors. Scavenging Ooze would be easier to hit and do work with as well over some other dudes you are running.

I would even say you could cut 1-2 land if you wanted to, you have a little bit of ramp. I would maybe put Golgari Charm mainboard x2 for the regenerate flexibility it gives or better yet run 3x Reaper of the Wilds and cut Polukranos, World Eater

Sideboard:

I think it needs some work too. Glaring Spotlight might be a good card vs naya hexproof, but that deck doesn't see enough play from what I have encountered to have a sideboard card just for it. Golgari Charm seems a lot better because it his the naya hexproof deck and mono black aggro. kills Master of the Feast Herald of Torment two big guys in mono black aggro atm.

I think Godsend is probably way too slow. you have Devour Flesh Glaring Spotlight Deicide Golgari Charm when you probably could easily cut two of these and still be fine. Another 2 Thoughtseize is fine.

thats just my .02

Elliot