 
If we’re somehow still alive at this stage, it’s time to do a little renegotiating of the terms and conditions of our matchup. 
With a sextuplet of apostates in play, simply pay  and sacrifice them as a molk offering to call forth a wicked abomination of your choosing. I’ve chosen the following fiends, but feel free to pick a particular pariah of your own preference.
•Griselbrand offers fantastic utility and a brawny body. The card drawing ability is relatively useless in our build, but Lifelink can offset all the damage we tanked to make it this far. Flying has its merits too.
•Prince of Thralls escalates the game state for our opponent. Not only do we unleash a potent 7/7 but we can steal their permanents on a recurring basis :D
•Abhorrent Overlord can help reestablish board presence and offer additional fuel for sacrifice mandates. Depending on when we choose to play this unholy horror, there could be 10 or more Shadowborn Apostle’s in play—that’s a lot of tokens.
•Demon of Death's Gate is the ace up our sleeve. If we weren’t able to land a Thrumming Stone and thus can’t spam Apostle’s, at least we’ll have a way to put a bomb in play. It’ll cost 3 Apostle’s and a chunk of life, but it’s something.