Mostly I trade for personal EDH projects. I do NOT play standard, so anything flavor-of-the-moment is probably up for grabs. I prefer to ship in a plain envelope with a top-loader (haven't had a bad experience yet), but will pay for tracking on higher-value trades if that is requested.
~
To give you an idea of cards (not listed in my wants) that I would be on the lookout for here are my decks.
Mikaeus, the Unhallowed: stalled out as I decide how "competitive" I want to go or if I'm keeping my dumb 5-card interactions.
Iroas, God of Victory *list*, high devotion count and the remaining Boros angels.
Animar, Soul of Elements: Mana-base and newly printed cards. A few morph creatures.
Riku of Two Reflections: The remaining clones.
Nekusar, the Mindrazer: Wheels and forcefeed.
Jeleva, Nephalia's Scourge: ginormous, game-ending mythics.
Jazal Goldmane: more anthems.
Daretti, Scrap Savant: mana sinks and combos.
Shu Yun, the Silent Tempest: Jeskai Planeswalkers and more boardwipes.
Daxos the Returned: painfully expensive stax enchantments.
Athreos, God of Passage: Death-effect creatures and more mass recursion.
General Tazri: Utility spells (recursion and flicker), manabase.