Art by Daniel LjunggrenIn fair Fiora, where we lay our scene...
Welcome back to Fiora, home of the Conspiracy sets. It's time to get backstabby.
This cube represents my best attempt at creating a Conspiracy Masters set - a collection that combines mechanics and cards from both sets as well as some new cards from other multiplayer-focused sets. Packs are created with 9 common, 3 uncommon, 1 rare, 1 Draft Matters card, and 1 Conspiracy card. I use the following for paper duplicate counts:
5x every common
3x every uncommon
1x every rare/mythic
3x every common
2x every uncommon
1x every rare
(Conspiracies)
3x every common
2x every uncommon
1x every rare/mythic
(Draft Matters)
Games are played in 3-4 player free-for-all pods.
Archetypes
Flyers
Graveyard Control/Reanimator
Sacrifice
Ferocious/Ramp
Tokens/Parley
Politics (Monarch/Voting)
Saboteur
Morbid
Auras & Equipment
Clones & Conspiracies
More adjustments!
There was a bit too much mill in without the necessary payoffs to make aggressively milling everyone beneficial. Dialing back the group mill will allow to play more like a traditional control deck that grinds out value from the graveyard and has a re-animator subtheme.
Demand Answers gives 
decks some common card draw, while Frenzied Fugue adds a fun, repeatable Threaten-style effect that you can recur with Tiana, Ship's Caretaker.
Sadly, my beloved Pack Hunt is just too strong with Spy Kit, letting you tutor 3 creatures for 4 mana, and can easily be abused with Echoing Boon and Double Stroke. Commune with Nature comes in to fill a similar role.
Guild Thief sucks. Drake Hatcher looks fun, plays well in both and , and shouldn't be too powerful at uncommon in a multiplayer environment without things like proliferate.