WotC finally printed a Grixis commander that interests me...so here's the deck:

Commander:
Kess, Dissident Mage

Creatures:
Fog Bank
Nightscape Familiar
Thermo-Alchemist
Guttersnipe
Vial Smasher the Fierce
Archaeomancer
Stunt Double
Talrand, Sky Summoner
Mulldrifter
River Kelpie
Etherium-Horn Sorcerer
Torrential Gearhulk
Diluvian Primordial
Sphinx of the Final Word

Instants:
Opt
Thought Scour
Increasing Vengenance
Rakdos Charm
Reality Shift
Terminate
Chaos Warp
Crosis's Charm
Forbidden Alchemy
Hero's Downfall
Kolaghan's Command
Supreme Will
Ancient Excavation
Cryptic Command
Fact or Fiction
Grab the Reins
Memory Plunder
Steam Augury
Mystic Confluence
Prophetic Bolt
Silumgar's Command

Sorcery:
Devil's Play
Ponder
Demonic Tutor
Manifold Insights
Toxic Deluge
Damnation
Rite of Replication
Bribery
Time Warp
Grave Upheaval
Spelltwine
Blatant Thievery
Cruel Ultimatum
Treasure Cruise
Blasphemous Act

Artifact:
Sol Ring
Dimir Signet
Izzet Signet
Lightning Greaves
Rakdos Signet
Runechanter's Pike
Thought Vessel
Chromatic Lantern

Enchantment:
As Foretold
Burning Vengeance
Metallurgic Summonings

Land:
Blackcleave Cliffs
Blood Crypt
Bloodstained Mire
Bojuka Bog
Cascade Bluffs
Command Tower
Creeping Tar Pit
Darkslick Shores
Desolate Lighthouse
Dragonskull Summit
Drowned Catacomb
Ghost Quarter
5 Island
Lavaclaw Reaches
Mountain
Nephalia Drownyard
Polluted Delta
Reflecting Pool
Reliquary Tower
Scalding Tarn
Smoldering Marsh
Spirebluff Canal
Steam Vents
Sulfur Falls
Sunken Hollow
Sunken Ruins
3 Swamp
Temple of Deceit
Temple of Epiphany
Temple of Malice
Wandering Fumarole
Watery Grave

The main "theme" is to cast instant/sorcery spells for fun and profit. Many of the spells give you straight value, and running them back later on with Kess just adds on to that. There's a bit of a token generation sub-theme, and a couple synergies with casting stuff from your graveyard, too.

I skimped a little on cheaper counters since they don't do much with Kess, and honestly getting something countered in this deck isn't really the end of the world. I've still got a handful of counters for stopping random finishers, though.

Fun things the deck has done:

- Cast 5 Cruel Ultimatums in one game.

- Killed someone via Vial Smasher damage with a Blasphemous Act on the stack.