Sealed & Swap

Here's the premise: take six packs of Magic, make a sealed deck, play them for one night. Then, we swap the entire sealed pool with another player and build a new deck to play next week. We can compare builds later and see what happened. It seems like a pretty cool notion and a way to get some extra mileage out of your sealed packs.

From Magic: Origins, Khans of Tarkir, Fate Reforged, Dragons of Tarkir, Battle for Zendikar and Oath of the Gatewatch packs I am trying to decide between red or black as my second color.

Green is in:
Epic Confrontation
Conclave Naturalists
Saddleback Lagac
Snapping Gnarlid
Ainok Guide
Sultai Flayer
Collected Company
Yeva's Forcemage
Frontier Mastodon
Rhox Maulers
Orchard Spirit
Abzan Kin-Guard

Creatures, Collected Company, that all seems pretty good...

Black looks like this if I add it:
Douse in Gloom
Complete Disregard
Weight of the Underworld
Flatten
Reave Soul
Revenant
Oblivion Strike
Coat with Venom
Sibsig Muckdraggers
Mire's Malace
Alesha's Vanguard

Essentially: all the removal. Red, on the other hand, gives me this:
Outpost Siege

Akroan Sergeant
Hordeling Outburst
Arrow Storm
Atarka Efreet
Boulder Salvo
Sparkmage's Gambit
Mina and Denn, Wildborn
Savage Ventmaw
Vaultbreaker
Tunneling Geopede
Kolaghan Aspirant

So not as much removal but some solid cards and an improved mana curve.

After some hemming and hawing I'm going for the risky RGB deck;

Kolaghan Aspirant
Vaultbreaker
Akroan Sergeant
Savage Ventmaw
Mina and Denn, Wildborn
Epic Confrontation
Conclave Naturalists
Snapping Gnarlid
Ainok Guide
Sultai Flayer
Collected Company
Frontier Mastodon
Rhox Maulers
Orchard Spirit
Abzan Kin-Guard
Douse in Gloom
Complete Disregard
Weight of the Underworld
Flatten
Reave Soul
Oblivion Strike
Coat with Venom

As good as Outpost Siege is, I fear using my turn four casting it. That's an important turn in sealed and having something that really turns the deck on is important. Just as relevant: if I draw that card on turn seven and I'm in trouble, it doesn't help me. Collected Company, on the other hand, has the opportunity to bring out another creature on my opponent's turn. That's a stronger play.