It's pretty simple – I have cards you want, you have cards I want. I am also willing to sell my cards for $$ american. If you see anything that you want please e-mail me at c***2@o***t.com.
For reference… You can assume that the cards listed are from their original BB sets if they are from Alliances and after, unless otherwise noted. I don’t have very many cards from after Urza's Saga.

Wants…

* means I want it more, obviously

2 Tinder Wall
3 City of Brass*
4 Karpulsan Forest
3x Kird Ape
2 Sol Ring
3 Birds of Paridise*
4 Demonic Tutor
4 Regrowth*

Have…

(Haves are roughly listed in order of value/popularity/playability… most being located near the top)

GOLD/MULTI

Lobotomy
Asmira, Holy Avenger
Fermef Enchantress
2 Selenia, Dark Angel
2 Reparations

LAND

Wasteland
Strip Mine (4th)
Mishra's Factory (4th)
Lots of uncommon lands – Ghost Town, Blasted Landscape, Flood Plains, Grassland, etc.
Griffin Canyon
3 Scorched Ruins
Possibly Kjeldoran Outpost for a really good deal

ARTIFACT

3 Ensnaring Bridge (ST)
Scroll Rack
Altar of Dementia
Horn of Greed
Phyrexian Colossus
Memory Crystal
2 Static Orb
2 Erratic Portal
Thran Tome
Fool's Tome
Emmessi Tome
Urza's Blueprints
2 Elkin Bottle (1 5th, 1 IA)
Black Vise (4th)
Smokestack
2 Ruby Medallion
2 Emerald Medallion
Jet Medallion
Sapphire Medallion
2 Well of Knowledge
Ertsatz Gnomes
Disrupting Scepter (4th)
Meekstone (REV)

BLUE

2 Time Warp
2 Equilibrium
Illusions of Grandeur
Time Elemental (4th)
Desertion
Evacuation
Intruder Alarm
Benethic Behemoth
Recall (CH)
2 Dominatinbg Licid
Energy Field

White

Wrath of God (6th)
Glorious Anthem
Catastrophe
Limited Resources
Auratog
3 Avenging Angel
2 Pursuit of Knowledge
Zhalfirin Crusader
Rashida Scalebane
3 Hidden Retreat
2 Peacekeeper
Shaman en-Kor
Alabaster Dragon
2 Southern Paladin
Exalted Dragon
Debt of Loyalty
Field of Souls
Hanna's Custody

Green

Verdant Force
Natural Order
Rushwood Elemental
Manabond
Recycle
Fungus Elemental
2 Quirion Druid
Fugitive Druid
Maro
Call of the Wild
Verduran Enchantress (4th)
2 Rowen
Nature's Revolt
Eladamri, Lord of Leaves
Whirlwind

Red

Relentless Assault (Portal 2)
Rathi Dragon
2 Thundermare
4 Furnace of Rath
Ravenous Baboons
Ruination
Flame Wave
Scoria Wurm
Hivis of the Scale
Smoke
Goblin Bomb

Black

2 Dregs of Sorrow
2 Greven il-Vec
Grave Pact
Pit Spawn
Phryrexian Plaguelord
Plaguebearer
Baron Sengir
Mortuary
Wave of Terror
Infernal Tribute
3 Morinfen
Bone Dancer
Revenant
Abandon Hope
Agonizing Memories
Xenic Poltergeist
Abyssal Horror
Extinction
Fallen Angel