Enral minor note, generally use USZ to describe Blue Sun's Zenith, BSZ means Black Sun's Zenith.

SynergyBuild: Haha good catch

Well, I did get in another 2x reps today, but the bad news is that my meta/playgroup is now fully aware of what we're up to in your build, so I'm going into most games playing Archenemy from turn one against, mostly, creature-based aggro with artifact/equipment/counters support, and decent graveyard recursion.

To speed things up a little bit, I'm thinking of swapping out the following:

Conjurer's Closet (has underperformed for me, vis a vis the CMC); Gilded Lotus (would rather get the 3x mana boost at 4 CMC via Thran Dynamo); Kaya, Ghost Assassin (only really effective as a combo finish vs value engine); Solemn Simulacrum (low-impact on the whole); Magister Sphinx (draws tons of immediately hate/often ends games, and not in my favor); Ashen Rider (too slow/low-impact)

For the following: Altar of the Brood (need at least one "fast" combo finisher in a pinch); Brainstorm/Ponder/Mystic Remora/Rhystic Study (debating which 2x cards to pick here; even with tutoring, draw/selection feels like it needs a boost. Selection on the cantrips would be better if Miracles were a stronger subtheme, but perhaps raw draw is better, and blinking Mystic Remora to reset to cumulative upkeep seems good); Wrath of God; Merciless Eviction; Thran Dynamo

I feel like I'm also blanking on 1-2 other swap-ins that could help shut down big or evasive creatures swinging in to us; maybe Gonti, who has also underperformed for me outside of combo finishes, can/should come out for an Evacuation, which would also stall the board/give us more ETB triggers that we can re-sequence to our benefit?

I may be overreacting to having played a 3-man pod vs 2 other aggro decks, but it still seems to me like if the curve shifts down slightly and runs a few more answers, it could be a good counter to the hate this deck will draw once/as it becomes a known entity.

NeonEndymion: I agree with solemn...I would replace it with Thran Dynamo (I just did) and keep the Gilded Lotus. I'm still on not onboard with Altar of the Brood as it is generally a useless card outside of an easier combo win but if you want to replace it with Conjurer's Closet. I would have to concur with you that you are probably overreacting since playing archenemy in a 3 player pod is generally hard to play. Have you tried tutoring for Ixidron? That card has been really good at keeping degenerate creatures at bay.