It's a deck which is both a tribal zombie deck, and a combo deck, I have resently made some major changes that I have not yet tested. Any suggestions on inprovements and just comments in general will be welcome.
there are mainly 3 combos in the deck
1: Deathbringer Thoctar + deathbaron, first you need to get a counter on Deathbringer Thoctar, (should be possible) then remove it to deal 1 damage to a creature, since deathbaron grants thoctar deathtouch, the creature will be destroyed, and you will get a new counter on Thoctar, which you can then remove to destroy another creature, remember it does not need to be combat damage for deathtouch to work.
note that corpse harvester can be used to find both cards for this combo
2: fatestitcher+freed from the real+ izzet boilerworks or dimir aqueduct, this combo will give infinate mana, which of course can be used with fireball, if the combo is made with dimir aqueduct, and you have sunken ruins in play, you will be able to get infinate black and blue mana, which will let you activate lich lord of unx's second ability infinate times. again note that some of the cards in the combo can be found with corpse harvester
3: exhume+putrid imp+ any creature
turn one: play putrid imp
turn two: discard a creature you want in play, using putrid imps ability, then play exhume to put it from your graveyard to play. (since half the lands in this deck comes into play tapped, this may only be possible in turn)
note that in late game this may be dangerous, since your opponent is more likely to have some cool stuff in his graveyard, make sure to use cemetery reaper to remove it first, if that is the case.
because of the combos which include creatures, I have decided to add a lord of the undead, to help get them back, in case a key creature is destroyed, at the same time, it is posible to get the creatures you sacrifice to corpse harvester back. (note, if someone removes one of your creatures from the game, sacrifice it in response if posible, there is a good chance you can return it later, at least if you use enough resources on it.)
while it has these combos it is also a decent zombie-deck, using abilties like those of cemetery reaper and lich lord of unx, it should be posible to have two zombies enter play the same turn, which will trigger noxious ghoul's ability twice, hopefully killing of some of the opponents creatures and making them more vournable to Thoctar, even without death baron to give it deathtouch. soulless one can get really strong if you get some tokens into play, and lich lord of unx ability is really cool even without activating it an infinate amount of times, just be carefull not to put too many cards in his graveyard if you are planing on using exhume any time soon.
I also use a zombie master, generally to keep my zombies alive, and to crush the opponent if he plays with swamps.
other cards I have consider for the deck can be found in the sideoard.
note: nantuko is to be able to sacrifice at any time, which will benefit Thraximundar, and Deathbringer Thoctar. and will also let you sacrifice a creature which is about to be removed from game.