Want EDH pieces

Looking to acquire the cards below. Let me know if we can work something out.

Want:

Time Warp
Time Stretch
Austere Command
Dimir Doppelganger
Spell Crumple
Hinder
Keiga, the Tide Star
Flagstones of Trokair
Grave Pact
Quicksilver Amulet
Mystic Snake
Norn's Annex