Puschkin

Just for your information: The Falkenrath guys adopted this mechanic by the Sliths. However, the Sliths in turn adopted the mechanic by one of my favourite Legends cards: Whirling Dervish :)

I said replace SOME of them. So, you know, can actually play those non-blue cards.
If, on the other hand, you don't plan to play it anyway, why bother with lands at all? We could get rid of lands alltogether and add more cards fitting the theme.

Hilarious. Best theme deck ever^^
I searched for a card that could represent the obligatory puke-bucket where your fuglies could barf into but didn't find much. Chalice of Life looks like someone is about to chuck up but the chalice itself and the name of the card don't really fit.

Stench of Evil should be in this for sure :) (probably fits better than Breath of Malfegor)

With some adjustments to the mana base the deck would at least be playable. Replace some Islands with swamps and any kind of blue-black duallands. Then add some rainbowlands like City of Brass.

It would be lovely if you could work in Dark Supplicants and Scion of Darkness. The Cathedral Sanctifiers could make room for the Supplicants.

Oh and Subversion would fit the theme somehow.

I don't like Ultimate Price, they are risky because there are so many multicoloured creatures out there these days. Might I suggest Afterlife instead? Would work thematically and would combo with the Surture Priests.

It isn't MY deck. I just can't stand all the attention whoring here on MTGVault where people spam other's decks and ask for comments on their own decks without giving advice themselves.

or Ghost Town for that matter ... I wonder why Ghost Town is still worth 5 cents or so, it should have gone up since landfall is a thing.

Cabal Therapy costs one mana, how can that be too expensive? Especially since I suggested them to replace Despise. They just fit better because this deck doesn't have much problems paying the flashback cost.

Skullclamp isn't restricted in Vintage and never was to my knowledge. Why should it? It needs creatures to operate ... in Vintage ...

About Demonic Appetite, I didn't know that you are thinking that competitive and are aiming for such a fast victory. And even if I would think that the requirement to sacrifice creatures slows you down again (unless you have Blood Ghast as well and a land each turn).

I'll concede regarding the Diregraf, though, I always forget about the Gravecrawler's requirement.

My suggestions will mostly address the flavour and theme side of things (referring to the title of the deck and your little RPG):

Golgari Guildgate => Tainted Woods
Llanowar Elves => Llanowar Dead (these are the elves that are actively helping the Necro)
Stonefare Crocodile => Blistergrub (not only does it fit better to your theme, it also works well with Deadly Allure and Altar's Reap)

For the sideboard:
Acid Rain
Creeping Mold

Well, you sac Blood Ghast, play the Wilds, Ghast comes back, you sac him again, then sac the Wilds, Ghast omes back a second time.
Sure, you won't get any benefit if you don't have the Ghast and/or nothing to sac him and I really don't know if this is worth the troubly of running a land that ultimately gives you a land that comes into play tapped - but that's why the Wilds are in this deck. Haven't played this deck so I can't say if it is worthwhile.

Liliana's Shade is way off the mana curve for this deck. Armillary Sphere maybe but I also don't se this as a worthwhile addition because you really only need it for the Ghast.

Bloodghast has landfall.

Yes but this deck is called "Definition of pure burn" ... and Ball Lightnings and stuff certainly is no burn. Breaking Point isn't "pure" burn either and Assault Probe and Unearth are certainly no burn whatsoever, by any definition (same is true for Desperate Ritual but I'll let that slip). In fact, this deck doesn't have a single pure burn spell that burns without questions, all burn spells that are there need something to sacrifice and/or special conditions to be met.
I understand your stance on Ball Lightings all too well, but the title of the deck is just misleading.

Cards like Gravecrawler and Blood Artist didn't exist 3 years ago, so it can't be the same.
When millions of players are building decks, alot of them will look similar, even if they never accessed the internet before, especially when it is about common themes like sacrificing creatures in a mono-black deck. Alot of card choices are just logical ones, especially in the newer Sets where block mechanisms and tribal themes run rampant. For many years now, Wizards of the Coast is designing the decks for us (they print new cards specifically to interact with existing cards and decks).

That being said, the card choices are exactly the same down to the single Skullclamp. On the other hand, MTGVault DOES have the "clone deck" functionality, so why not use it?

That lonely Skullclamp prevents this from being Legacy legal. I would either remove it or add more.

Demonic Appetite isn't that useful. I would run Blade of the Bloodchief instead (you even have Vampires in the mix).

Diregraf Ghoul is an odd choice since you are not dependant on zombies. Good replacements would include Tenacious Dead, Deathgreeter and Drainpipe Vermin.

In the olde days we played Krovikan Horror in decks like these but I guess he is too high above the mana curve?

In this deck, Cabal Therapy should be better than Despise.

Maybe give some actual advice here first.

You need to have at least 7 cards in your graveyard in order for Hunted Grounds to work but i don't see how you would manage that fast enough. Yes, when you Oathed yourself you might get threshold, then again, if that happenes, you should already be winning.

Talking of that, your selection if creatures is odd. Sphinx of Steelwind? Crosis!? It that Betrays? Sheoldred? Your creatures should have haste so they can end the game quickly or have a huge enough impact. Furthermore, with Oath you don't need so many. You could have just one creature, the biggest, meanest and hardest to remove you know. Top three choices: Progenitus, Emrakul and Blightsteel Colossus (BLIGHTsteel - he has infect, so he can kill with just one attack). If this is the only creature in your deck, you will Oath it out automatically. Unless you hold in your hand, that's why you want to have about 3-4 ceatures in your deck but not more. Oh and don't worry that you will mill yourself to death if the creature is at the bottom - that's what Gaea's Blessing is for.

4 Idyllic Tutors on top of 4 Elinghtened Tutors and 4 Sterling Grove is overkill. Instead you would be better of packing spotremoval for anything that could ruin your day (for example anything that allows your opponent to get rid of his creatures)

Love to see good old Lumberjack!

While we are oldschool like this, you might consider Tinder Wall instead of Sylvan Caryatid. And maybe Harvest Wurm instead of Cultivate. And since your ideal turn one is red mana + Orcish Lumberjack while you need a Forest on turn two, you probably need Wooded Foothills (I guess if you had Taigas, they would be in)

He is new to Magic and it won't hurt to have 66 cards when playing casual. This deck is still waaay better than the 80+ card piles you and me built when we started Magic, so cut him some slack.

Personally I would play Call to the Grave mainboard instead of Endless Ranks of the Dead. The latter is kindof "winning more" whereas the former is board control. If you keep the opponent's number of creatures down you buy yourself enough time to get your army growing. Moreover, Endless Ranks doesn't help you much if you are already in bad shape but Call to the Grave can help you coming back from a bad situation.

If this is going to be casual, may I suggest Flickering Ward? It protects the creature you are building on and if you have the Spiritdancer, it's a very efficient draw engine. It's not Modern legal, however.

Well, I call that constructive criticism. I want to help you out, not try to be friends via compliments in the hope that'll make you check out my decks in return ;)

Gaea's Herald and Deathrite Shaman in the side now that's what I am talking about, true sideboard cards. :)