to me, this seems like an OBVIOUS suggestion. because it is SO good, even as 4 ofs in such low CMC decks like yours. why not add as many Blind Obedience s as you can? KILLS ALL AGGRO and we all know that MOST standard decks don't run enchantment hate (very few cards that even do that, honestly) plus with your low CMC having the excess mana is perfect for using extort, which is why even running the 4 of is not a bad option.

just my opinion, but I would suggest taking out the 2 Knight of Infamy (because it still takes care of those white weenie boros aggro decks you mentioned in your meta) and 1 Bloodthrone Vampire for a total of 3 Blind Obedience . I'm telling you, you will never not like pulling this card early or late game. because early game is control and late game is extort

you only have one card in here that is multicolored which is why Renounce the Guilds would be hilarious and very effective for sideboard

Skirsdag High Priest is perfect for your amount of sac'ing to morbid.

Immortal Servitude for 4 or 5 = mass reanimation.

Immortal Servitude and Skirsdag High Priest were both in the deck at one point, but I took them out because they were too clunky or just win-more. As for Blind Obedience and Renounce the Guilds , with only 8 white mana sources in the deck, I'm hesitant to add any more white spells to the main board that aren't higher on the CMC or specific sideboard answers for games 2/3.

In theory, I do like Blind Obedience , but to reliably shut down early aggro, you also need 3 copies in the sideboard, which I just don't have room for I don't think.

I like the deck so +1 from me.

I have some interesting thoughts for this too. Obviously I would like to see Skirsdag High Priest because you have sac outlets and cheap creatures you can tap after activating morbid and recasting creatures in.

Second of all, I think there is some unique ways to reset your geralf outside of your Thrull Parasite . Specifically Restoration Angel and Fiend Hunter . To accentuate this, you could have blood artist on the field, swing with Geralf's Messenger have it go to the graveyard, comes back in tapped opponent takes 3 you gain 1 from geralf trigger + blood artist, cast fiend hunter to exile it and then use Cartel Aristocrat or Bloodthrone Vampire to sac the fiend hunter bringing geralf back triggering both geralf and blood artist again.

Additionally I was thinking about how messed up it would be to have a Desecration Demon out and your opponent declares attack step, you put the trigger on the desecration demon for combat step opponent sac's a creature triggering blood artist, then swings in, Restoration Angel flashed in bouncing the demon allowing him to block unexpectedly in addition to the angel, probably killing 2 more of their creatures. That Demon + angel combo could do some work. Also makes me wonder if you could respond to opponent sacrificing a creature to flash in and reset the trigger, but I doubt it would gain priority because its no longer the beginning of combat.

Those are all neat stuff in theory, but it would slow down my deck too much to be able to win against midrange or control.

What do you think about Harvester of Souls in place of Desecration Demon , I've been playing a deck similar and wondered how good the synergy with the sac playstyle would be.

On second thought the enemy triggering sac for Blood Artist every turn while pumping Desecration Demon is probably vastly better for a late game threat.

Desecration Demon also comes out 2 turns earlier.