Shadowstone Apostles (Mono-Black) (Casual)

Mono-black Shadow-Demon Themed-Deck

Really funny and entertaining combo deck that utilizes primarily a 2-card combo:
Shadowborn Apostle - If you don't know what they are before, now you do. A Swarm of demon-summoning freaks.
Thrumming Stone - If you don't know what "Ripple" does, now you do. Lets me chain-cast apostles until I have six on the battlefield.

Combo Support:
Demonic Tutor - Cause you NEED that Thrumming Stone. If you've already got it, tutor for speed, unblockable, protection or replay.
Dark Ritual - Speeds up Thrumming Stone deployment.
Dauthi Embrace - Makes your Demon unblockable.
Guardian Beast - Protects your Stone and/or Cauldron.

Core Demons:
Lord of the Void - Helps you pull additional combatants from your opponent's libraries.
Archfiend of Depravity - Helps you wipe combatants from the board if your combo happened too slowly and you're playing catchup.

Additional Support:
The Cauldron of Eternity - Cycle every Shadowborn Apostle after using their ability, help pull back demons, guardian, and apostles from grave.
Vampiric Link - Counteracts grave-recursion life attrition. Usually tutored for if everything else is already rolling.

Plays surprisingly consistently. Fun, and since you're typically delving through your opponents library, which can be different from game to game it actually has some fun replayability.