I created this list when a friend said he wanted to put all of the black sacrifice enchantments into one deck with Nykthos. I immediately thought; 'its a cool idea but does nothing against creatureless matchups' then I thought to all of the discard enchantments floating around with Waste Not and then to Unholy Annex and thus this deck was born and mercilessly edited over and over again, until I finally settled on this 60.
This deck seeks to disrupt the opponent long enough to either win through a combo kill, incremental and incidental damage, or the plan of a few creatures dealing large amounts of damage. Nykthos is powered by an array of disruptive enchantments, as well as Liliana of the Veil that allow us to drop more permanents, level up our enchantments and cast our bigger cards. Every matchup is like a puzzle, sequencing correctly into threats and taxing opponent's life little by little until they're within the range of a finisher. There are a lot of moving parts and micro-synergies that complement the two possible combo finishes.
The two combo finishes:
Unstoppable Slasher + Bloodletter of Aclazotz
The classic combo. One hit with Slasher will kill the opponent if Bloodletter is out. Slasher is also just a powerful must answer threat, by himself, his first hit takes an opponent at 20 life down to 9, his deathtouch makes blocking less desirable and his recursion ability makes him difficult to efficiently remove, especially if an opponent has been discarding all of their removal to our enchantments.(which happens quite often) Bloodletter is expensive and not very impressive on his own but his stock rises when he gets to double damage from out enchantments, he also gifts us a massive three devotion as the cherry on top.
Unstoppable Slasher + Warlock Class(fully leveled)
A fully leveled up Warlock Class(rare but not unfeasible with Nykthos) has the same effect with Slasher as Bloodletter does, except that it occurs at the end of your turn instead of immediately.
Dealing incremental and incidental damage is quite powerful in this build because of the aforementioned combo finish and this lingering threat: Gray Merchant of Asphodel + either Bloodletter or Warlock Class which are generally enough to put the game away or make it very close. Just Gray Merchant and Bloodletter together is 10 damage and that's quite rare of a floor because there should be quite a few enchantments on the board boosting your devotion by this point in the game.
The increments that get you there:
Hopeless Nightmare provides a Shock with its discard and 1 devotion
Bandit's Talent when leveled once provides a Rack effect that synergizes with our 15 possible discard spells
Meathook Massacre and Warlock Class lets all of our removal ping for 1
Unholy Annex fully unlocked or with Bloodletter deals 2 every turn
These don't deal a major amount of damage but they do enough to often make Gray Merchant lethal.
Everything else:
You'll notice a lot of three-ofs, I found diversifying threats to be an advantage here, the idea being to keep an opponent guessing so their early discards are bad, with unpleasant surprises around every corner and the sideboard fleshing out the most salient plan game 2.
Momentum Breaker is deceptively one of the best cards in this deck, being able to either kill creatures OR act as another discard spell, depending on the matchup is fantastic, being able to sac to gain life late game has also come in clutch a surprising number of times. If using as discard, usually you should deploy your other discard enchantments first, just in case there's a creature you want to remove, Of course, this is all matchup dependent, against aggro you generally always want this as removal.
Liliana is generally just a removal spell that attracts attackers, we often don't want to discard our own cards in this deck, it generally needs our every out and is mana hungry.
Nowhere to Run and Waste Not are easily the worst cards in this deck, they're great on occasion; Nowhere against aggro and Waste Not against control but too inconsistent to have many copies of main.
Don't forget, Bandit's Talent can be a source of card advantage late game, provided we have successfully exhausted an opponents hand through our mix of discard and threats.
