NOTES:
I've played basically every color combo of this deck, and I've been enjoying this aggressive (and slightly thematic, Camelot and some of the knights maybe not worth....) version the most. The name is derived from the theme of losing your humanity whilst upon the quest to seek the holy grail (mortals -> undead).

Den of Evil supports a large majority of the greedy affinity spread. Don't always just use it as a tower, the ability to ignore threshold is often more important. Using mirage on the den is sometimes necessary.

This deck used to use the Heirloom Lost / Desecrate interaction with Mirage and felt much stronger back then. Despite that I think the rules change was the right choice as it was an unintuitive interaction and created serious feels bad moments for opponents who did not understand it. Mirage is going to be very strong with traps, and it already feels great with many sites I'm running. Anticipating a lot of sick changes with the full release of the new set.

Atlas needs to include Mock Court as it has no downside for me, but I don't own them yet.

The other 2 main variants I've played and are worth mentioning were:

Swapping Fire for Earth and playing town priest + ring combo package (including fenvale muse) with lots of solid earth removal, Call to War, Death Knight etc.

Keeping the same colors, but including Demonic Contract (sometimes instead of carrionette) and all the good angels/demons instead of the heavy Knight focus. You can get a surprising amount of Unique demons+angels, which means searching for ANY card in your deck. Scavenging Fiend to re-use four waters / toolbox / some of the other sacrifice artifacts was definitely the star of that version, as it being an exceptional demon also allows you to Demonic Contract for Whirling Blades / Poison Nova, which is usually all you really need to turn a game around or seal it out.

Even just playing only 2 colors by cutting the water allows for Omphalos and a more streamlined Atlas, though I would still play the Rapids/Sinister Pond stuff. Sinister Pond can be a nonbo with Carrionette due to banishing, so just make sure to consider what you are banishing.

Minions with ward that are made evil by corruptor lose ward immediately upon being summoned(not sure how this works if I take control of enemy minions with ward? would they still become evil?), but Clairvoyant's effect has been strong enough that it is fine, and Archangel Raphael can still ward my avatar. I did avoid Doctor Demetrius due to this fact despite loving the card :(

MISSING FROM LIST:

MINION
1x Aino
1x Sir Mordred

SITE
1x Defiler Spire
1x Merlin's Tower
1x River of Flame
1x Sinister Pond

Wishlist:
2x MOCK COURT
Merlin
Key to the City
Amulet of Niniane
Philosopher's Stone
Pied Piper of Hameln
Death Dealer
The Black Plague
Returned King (for earth variant)