I believe it goes this way : you have Heartless Summoning and Havengul Lich in play, a Priest of Gix in your graveyard. The priest will only cost you 1 colorless to pay for the lich's ability and 1 black mana for himself thanks to heartless summoning. He comes into play gives you 3 black mana and then dies because heartless summoning gives him -1/-1. You may repeat the process as many times as you like and gain 1 black mana each time.
Hey, congratulations on your first foray into EDH / CMDR. Couple of things I would suggest which shouldn't bee too hard to acquire...1) More Graveyard hate - Bojuka Bog / Tormod's Crypt should be good for you (Crypt + Trading Post are a nice synergy)2) Viscera Seer , Blood Artist , Necrotic Sliver , Hell's Caretaker - these are cards which I highly value in any sac/recur based deck.3) Review your sweeps - Whilst Terminus and False Prophet are good, consider that they affect your creatures too.
I think you have a really nice shell to tune up, with some cards that will be all-stars, but there are a few which I think will be underwhelming when you play them (Priest of Gix , Jinxed Idol , Death Pit Offering )
I was just thinking, I play a Sac-centric version of Karador. Victimize + Eternal Witness + Priest of Gix + Altar of Dementia or Ashnod's Altar or Phyrexian Altar could give rise to some interesting combos...
I have a pretty solid Karador deck list in my profile, check it out.
Okay, more red.
Anger of the Gods especially if you can get a bulk of your toughnesses over 3. Demigod of Revenge even if the ability doesn't work, he's a 5/4 flying, haste for 5 delicious points of devotion. Fists of the Demigod Can you imagine Mogis with First strike and Wither?
Also consider putting it Priest of Gix It's a human after all.
consider Go for the Throat , Nyxathid , Megrim , Distress , Duress , Abyssal Nocturnus , Mind Rot , Bile Blight , Cry of Contrition , Hymn to Tourach , Liliana of the Veil ... also extra mana stuff ... Dark Ritual , Cabal Ritual , Priest of Gix , Crypt Ghast
|Power / Toughness||2/1|
|Avg. draft pick||5.08|
|Avg. cube pick||7.19|
|Commander / EDH||Legal|
|Duel Decks: Phyrexia vs. The Coalition||Uncommon|