Without further ado:
The overall strategy is very simple:
(1) Ramp up with mana rocks and drop Kaalia as early as turn 3 while using some hand disruption.
(2) Swing and drop a beast. You've effectively put your opponent(s) on a swift clock.
(3) Maintain the
clock with removal and land destruction.
(4) Laugh manically as you win.
I also have a 10 card sideboard list that I use for multiplayer conversion:
[deck]Multiplayer Sideboard[/deck]
What I'm going to do, essentially, is take out all the cards that I feel are not at their strongest in a multiplayer free-for-all.
The first to go are the single shot discard spells: Thoughtseize, Duress, and Castigate.
The next are the Planeswalkers: Lillina of the Veil and Ajani Vengeant. These are amazing cards, but they don't exactly live very long in a multiplayer game. Plus, with more people involved in a game, their abilities don't impact
the board as well as they do in 1v1.
Finally, I remove the 5 creatures that I believe lose power with the addition of extra players: Iona, Shield of Emeria, Master of Cruelties, Nefarox, Overlord of Grixis, Blinding Angel, and Mother of Runes. Most of these choices are self-explanatory, like Nefarox and Blinding Angel - they require you to focus solely on one player and there are much better universal options available for multiplayer games. Mother of Runes loses a lot of power when you factor in all the removal that 2-3 other players are packing, so while she's very good to have early in the game, she's just terrible to have late in the game. To the surprise of most people, I remove Iona, Shield of Emeria and Master of Cruleties. These are, more or less, the combo kill cards in a 1v1 match.
In multiplayer, they're much more clunkier. You can drop an Iona in a 4-Player pod and maybe lock about 2 people out of a color. Good job, you are now public enemy number one (As if you weren't already 'kill-on-site' for playing Kaalia in the first place, well, you are now.). There are still maybe 1-2 players that can cast removal spells, so Iona won't be living long. Master of Cruelties is awesome when you're 1v1 because you can 'instant-kill' your opponent without much fuss. In multiplayer, you may be able to kill an opponent with him, but you won't kill the entire table. I'd much rather have something more useful, like a Hoard-Smelter Dragon or something.
---Aside---
I realize that a lot of groups frown upon mass land destruction (MLD). Mine doesn't, therefore I continue to play Armageddon, Balancing Act, and Cataclysm. And while Balancing
Act doesn't exactly murder all the lands, it's still enough to rile some people up. If your group is a bunch of pussies Negative Nancies, then I'd yank those 3 cards out in favor of Wrath of God, Damnation, and Unburial Rites.
---End Aside---
I call this multiplayer version "No More Tears," since it includes the changes I mentioned in the "Aside." If I had to attend a Commander night at a different LGS, I'd bring this to avoid any complaining. I'd also want to leave a somewhat positive impression so that I'm well received the next time I play. Remember, this is supposed to be a gentleman's game. It's really not, but we're supposed to act like it is.
[deck]No More Tears[/deck]
General (1)
1x Kaalia of the Vast
Creature (23)
1x Angel of Despair
1x Angel
of Finality
1x Avacyn, Angel of Hope
1x Bogardan Hellkite
1x Lord of the Void
1x Balefire Dragon
1x Baneslayer Angel
1x Bloodgift Demon
1x Disciple of Bolas
1x Gisela, Blade of Goldnight
1x Grand Abolisher
1x Hellkite Tyrant
1x Hoard-Smelter Dragon
1x Karmic Guide
1x Sire of Insanity
1x Linvala, Keeper of Silence
1x Rakdos the Defiler
1x Rune-Scarred Demon
1x Scourge of Kher Ridges
1x Steel Hellkite
1x Thundermaw Hellkite
1x Utvara Hellkite
1x Yosei, the Morning Star
Mana Rocks (10)
1x Boros Signet
1x Charcoal Diamond
1x Coldsteel Heart
1x Fire Diamond
1x Jeweled Amulet
1x Marble Diamond
1x Orzhov Signet
1x Rakdos Signet
1x Sol Ring
1x Talisman of Indulgence
Artifact (5)
1x Defense Grid
1x Lightning Greaves
1x Quicksilver Amulet
1x Sensei's Divining Top
1x Sword of Light and Shadow
Enchantment (2)
1x Phyrexian Arena
1x Stranglehold
Instant (12)
1x Boros Charm
1x Chaos Warp
1x Enlightened Tutor
1x Oblation
1x Orzhov Charm
1x Path to Exile
1x Rakdos
Charm
1x Return to Dust
1x Skeletal Scrying
1x Swords to Plowshares
1x Tithe
1x Vampiric Tutor
Sorcery (11)
1x Austere Command
1x Ashes to Ashes
1x Blasphemous Act
1x Demonic Tutor
1x Diabolic Tutor
1x Hallowed Burial
1x Damnation
1x Wrath of God
1x Obzedat's Aid
1x Unburial Rites
1x Vindicate
Land (36)
1x Arid Mesa
1x Badlands
1x Battlefield Forge
1x Blood Crypt
1x Bloodstained Mire
1x Bojuka Bog
1x Cavern of Souls
1x Caves of Koilos
1x City of Brass
1x Clifftop Retreat
1x Command Tower
1x Dragonskull Summit
1x Flagstones of Trokair
1x Godless Shrine
1x Hall of the Bandit Lord
1x Isolated Chapel
1x Marsh Flats
1x Mountain
1x Phyrexian Tower
1x Plains
1x Plateau
1x Reflecting Pool
1x Sacred Foundry
1x Scalding Tarn
1x Scrubland
1x Snow-Covered Mountain
1x Snow-Covered Plains
1x Snow-Covered Swamp
1x Strip Mine
1x Sulfurous Springs
1x Swamp
1x Homeward Path
1x Vault of the Archangel
1x Verdant Catacombs
1x Volrath's Stronghold
1x Wooded Foothills
[/
deck]