I have very limited access to cards. I built a deck entirely out of default cards and gift cards. The idea is to fill the board with creature combat, using soul brokers and altar of ix to get mana out of them as they die so that I can accelerate to a 3 domain end game. I also have the option of an early game land grab with dank pits.

buildings = 6
1 X graveyard
2 X altar of ix
3 X dank pit

creatures = 19
2 X astridian diplomat
1 X barskin dragon
3 X carrion feaders
1 X crypt doctor
3 X hell cat
1 X journeyman necromancer
1 X leprous shambles
3 X soul broker
2 X stone mauler
1 X tree mother
1 X xosan heresiarch

enchantments = 9
2 X death mark
2 X demonic surge
3 X planar rift
2 X possession

spells = 6
3 X gather spirits
2 X lysis
1 X restore nature's balance

Only reason for adding sylvan looks like the Restore, right?
You want more than 1 Doc, and not 3 Feeders. Also you have to have 3 diplomats, considering they are your only way to get the syl domain.
What about 3 Red Imps? If you get 2 (on the opening hand), it's best opening combo out there..
You have really lot 3D cards there, which I am not sure will work unless you are a really good player (especially without Nether Plasmas - which you could add, I think default has 1 at least?)
And last point - even though you might get board dominance, what about grabbing wells? Are you going to rely fully on those Dank Pits?