ilgli

@saturn999

Thank you for the suggestions!I agree with the switch of Bone Splinters for Fatal Push the added instant speed is quite nice.Sidisi, Undead Vizier must have fallen under my radar, she has good synergy with the idea of the deck and is a suitable replacement for the high cmc legends I was running before..I also agree with the addition of a second Nykthos, just gotta track one down.

just out of curiosity, why abzan and not just monoblack devotion? you could add Gray Merchant of Asphodel and if you have the money Liliana of the Veil. plus there are plenty of other black removal spells like Go for the Throat or Walk the Plank or Victim of the night. also if you do black devotion you could run Nykthos, Shrine to Nyx

@SuperLicorice It was a mono black devotion deck before, wasn't that fun though.

A deck wanting to use Phyrexian Obliterator, without Arena or the already mentioned Gray Merchant of Asphodel seems odd. That being said this looks solid, main-deck graveyard hate/draw in the form of Nihil Spellbomb, is a good choice at the moment as is your removal suite. You probably have too many extraction effect in your sideboard, I'd cut Infinite Obliteration and Cranial Extraction, maybe try Dromoka's Command, Abzan Ascendancy or Lingering Souls?

I am a huge fan of Phyrexian Obliterator ! +1

I would suggest Urborg, Tomb of Yawgmoth in place of Stirring Wildwood . Also, 24 lands seems appropriate. (9 4cmc cards with no ramp). Mutagenic Growth seems unnecessary. Kambal, Consul of Allocation should be in the SB. Swap it for a Thoughtseize .

Also, if you're gonna run green, run Assassin's Trophy . If you're gonna run white, run Path to Exile .

Condemn is a good budget option for Path .

One more thing and I'll leave you alone. :D
Isolated Chapel and the like are miserable in 3 color modern decks. Pain lands like Caves of Koilos are much more Modern friendly.