What set are you pitching?
Frontier
What is the name of your pitch?
"This town ain't big enough."
What are the major mechanical themes in the set according to your vision?
Madness, Duel, and powering out huge fatties.
Please present six common cards of a color different from the color in the second round pitch. These cards should clearly demonstrate at least one major mechanical theme of the set.
Skeletal Sandwurm 5B
Creature - Skeleton Wurm
B: Regenerate ~.
Dig 2 (2, Discard this card: Reveal cards from the top of your library until you reveal a land card. Put that card into your hand and the rest on the bottom of your library in a random order.)
6/1
Thirsty Dryblood 2B
Creature - Vampire
Lifelink
As long as you control more lands than an opponent, Thirsty Dryblood gets +2/+0.
1/2
Mineshaft Shade 4B
Creature - Shade
1B: ~ gets +2/+2 until end of turn.
Madness 1B (If you discard this card, you may cast it for its madness cost instead of putting it into your graveyard.)
2/2
Tibalt's Brigand B
Creature - Human Rogue
~ can't block.
When ~ attacks, any player may discard a land card. If a player does, prevent all damage ~ would deal this turn.
2/1
Drought of Tears 2BB
Sorcery
Destroy target land.
Dig 2 (2, Discard this card: Reveal cards from the top of your library until you reveal a land card. Put that card into your hand and the rest on the bottom of your library in a random order.)
Death Wind XB
Instant
Target creature gets -X/-X until end of turn.
In 50 words or less, explain how this theme fits into the set, either mechanically and/or in terms of flavor.
Dig, Duel, and Madness synergize with each other and provide opportunities to play Big Spells and Sandwurms, which reward hitting your lands as well as representing the bigger-fish of the Frontier power-politics. Black is home to conservative, arrogant land-owning vampires, and the more ruthless members of Tibalt's bandits.
Barely made it in time! What a weekend! What a world! I tried to make it clear that this pitch includes neither gold nor Eldrazi within the fifty words, but I'll have a longer argument on the wiki shortly.