Spellshapers and Delirium cards will all play well for you. Look for cards that sacrifice themselves for value, so cards like Seal of Cleansing and Seal of Doom over the versions that are strapped to bodies. Self mill effects like Strategic Planning and Thought Scour will work well. And free "cycling" spells like Gitaxian Probe and Manamorphose will help too.
Discard cards (My own cards in particular.).
Reanimate cards.
Play spells from the graveyard
Blink creatures
So mechanics that I' particularly interested in playing with.
Flashback
Madness
Cycle
I want to have all five colours share in the graveyard interaction, and have things skewed too much to one colour combination.
My 630 Card Powered Cube
My Article - "Cube Design Philosophy"
My Article - "Mana Short: A study in limited resource management."
My 49th Set (P)review - Discusses my top 20 Cube cards from MKM!
http://www.cubetutor.com/viewcube/18036
Thread Cubetutor
My Other Cubes
Pauper Cube
One-Drop Cube