This is a fun deck! Thank for giving me a new perspective on some cards. I am building a version of Be'lakor myself and it does look a bit different. Here are a few cards I have found that I really like in the deck and you may want to consider: 1. Footfall Crater - enchant a land for a red and tap it to give a target creature haste. AND it has cycling for 1 if you don't want it. 2. Descendants Fury - another red enchantment that allows you to sac a demon when it deals combat damage to a player and look through the top of your deck until you reveal another one to put on the battlefield. great enchantment that keeps the ETBs coming and the graveyard full of demons for reanimation! 3. Quicksilver Amulet - an artifact for 3 colorless that taps for 4 colorless and you put a creature out onto the battlefield from your hand. Busted in this deck. 4. this point is a package of reanimation cards I like to run over some the more expensive "mass" reanimation bombs. This way if you are countered it isn't the end of the turn: Animate Dead, Dance of the Dead, Necromancy, and Reanimate. I still run Patriarch's bidding because you need at least one big one. 5. Combos - There are two big ones for Be'lakor but I noticed you aren't running either? The one I like to run is Rite of Replication. It ends the game for 9 mana if Be'lakor is targeted on the battlefield and isn't countered. 6. Board Wipes - I like a lot of the ones you mention, but wanted to throw in a lesser seen one which is Earthquake. This is paid for with a red and X mana where X is dealt to all creatures without flying. Almost all Demons are flyers - so this is a one sided and customizable board wipe for the deck. I also recommend running Toxic Deluge - it is probably the best board wipe in the game. 7. Heartless Summoning - Last bullet point for me! (can you tell how much I like this deck?) This is an enchantment for a Black and 1 colorless that gives all your creatures -1/-1 BUT reduces their cost by 2! our boys are all pretty big for the most part - so this is a pretty good trade off for the ability to get them out 2 turns earlier for their effects. 8. OKAY LAST ONE FORREAL - Look into Roaming Throne from the latest set, it is a trigger doubler on a demon body. insanity for this deck.