These are the decks I used in my prerelease. I was gonna go to only the first one of the night but I had time and money to go to the second, so I figured why not? I got some absolutely amazing pulls with Dimir, didn't get so lucky with Boros. With that, I got a few good cards but not many.
- Dimir:
1 Dimir Guildgate
8 Swamp
7 Island
1 Consuming Aberration
1 Duskmantle Guildmage
1 Deathcult Rogue
1 Whispering Madness
1 Lazav, Dimir Mastermind
2 Way of the Thief
1 Shadow Slice
1 Dimir Charm
1 Sage's Row Denizen
1 Shadow Alley Denizen
2 Midnight Recovery
1 Soul Ransom
1 Grisly Spectacle
1 Spell Rupture
1 AEtherize
1 Psychic Strike
1 Bane Alley Broker
1 Dying Wish
1 Dimir Keyrune
1 Skyblinder Staff
1 Last Thoughts
1 Basilica Screecher
- Boros (splash Gruul):
1 Legion Loyalist
1 Assemble the Legion
1 Spark Trooper
1 Breeding Pool
1 Foundry Champion
1 Boros Guildgate
6 Mountain
1 Guardian of the Gateless
6 Plains
2 Forest
1 Warmind Infantry
1 Slaughterhorn
1 Fortress Cyclops
1 Frenzied Tilling
2 Wojek Halberdiers
1 Furious Resistance
1 Guildscorn Ward
2 Madcap Skills
1 Nav Squad Commandos
1 Hellraiser Goblin
1 Ordruun Veteran
1 Firefist Striker
1 Boros Charm
1 Aerial Maneuver
1 Foundry Street Denizen
1 Ghor-Clan Rampager
1 Angelic Edict