Building around Trazyn the Infinite for cEDH (Looking for suggestions)

[Cardinal_T_R_K]

Hey all, with the advent of Trazyn the Infinite being spoiled from the 40k commander decks, I have been considering its application in the realm of cEDH. I seem to have been able to understand the general includes to aid in ramping out fast and comboing off, however mono black is far from my strongsuit and I am not entirely sure what all to include to aid in consistency. The list includes two substitutes (Geth, Lord of the Vault in place of Trazyn and Mycosynth Lattice in place of Bioransference) until these new cards have been added to the card database.

Trazyn combo

[Cardinal_T_R_K]

Revision 6

Added/removed cards:
-1 Ad Nauseam
-1 Altar of Dementia
-1 Force of Despair
-1 Grafdigger's Cage
-1 Heartstone
-1 Koskun Falls
-1 Metalwork Colossus
-1 Mutilate
-1 Phyrexian Revoker
-1 Pithing Needle
-1 Withering Boon
+1 Convergence of Dominion
+1 Dauthi Voidwalker
+1 Desolation
+1 Lethal Vapors
+1 Leyline of the Void
+1 Necrogen Mists
+1 Nether Void
+1 No Mercy
+1 Oppression
+1 Out of the Tombs
+1 Sheoldred, the Apocalypse
+1 Tainted Aether

Changed amounts:
-1 Swamp

[Cardinal_T_R_K]

Revision 7

Added/removed cards:
-1 Biotransference
-1 Lightning Greaves
-1 Scion of Halaster
+1 Arcane Signet
+1 Grim Monolith
+1 Lion's Eye Diamond

[Cardinal_T_R_K]

Revision 9

Added/removed cards:
-1 Arcane Signet
+1 Thousand-Year Elixir