Martin Juzas Draft deck from the Top 8 of GP: Philadelphia featured no fewer than three copies of the powerful Shaman: "Martin Juzas Rakdos Draft" Creatures (16) 1 Carnival Hellsteed 1 Gore-House Chainwalker 1 Guttersnipe 1 Hellhole Flailer 1 Rakdos Cackler 1 Rakdos Ragemutt 1 Spawn of Rix Maadi 1 Splatter Thug 1 Thrill-Kill Assassin 3 Dead Reveler 3 Rix Maadi Guildmage 1 Rakdos, Lord of Riots Spells (7) 1 Annihilating Fire 1 Auger Spree 1 Explosive Impact 1 Traitorous Instinct 2 Deviant Glee 1 Unknown Card Lands (17) 8 Mountain 8 Swamp 1 Rakdos Guildgate This is among the best Rakdos Draft decks Ive ever seen, and I think Juza easily had the best deck in the Top 8
Gennari also considers it the easiest Vintage deck to learn to pilot, so it is certainly on the list of possibilities
All of that for 5 total mana over three turns is not a bad return on investment in my book
Effectively, you have to pay 6 Mana just to give a Creature a +3/+3 boost
In fact, you'd have to be trying pretty hard not to play a few plot cards, and they're pivotal pieces of some of the set's Limited archetypes
Other popular Grixis strategies include Treasures, which at this point Im pretty sure show up in spellslinger and any combination of colors that can play them