Strategy:
- Green/Blue deck
- Win by using Door to Nothingness (5 colorless mana cost Artifact which requires 2 mana of every color).
- Once I have Door to Nothingness and Chromatic Lantern on the battlefield, if I can untap 5 lands, I can produce the 10 color-varied mana necessary
- Use creatures to help accomplish all this, plus block, plus attack
(1) Put out at least 9 lands (probably all basic)
(2) Search library for Door to Nothingness and Chromatic Lantern, if need be
(3) Use Chromatic Lantern (CL) to give all lands the additional ability to produce 1 land of any color if they tap (CL also produces 1 mana of any color)
(4) Enter Door to Nothingness onto the battlefield; untap that turn, if able
(5) Tap Door to Nothingness that turn, if able; if not, then tap next turn

Deck must be able to:
Offensive:

Defense:
Against flyers (white)
Against big creatures (a fast green deck)
Against a mill deck (puts library into graveyard)
Against Planeswalkers
Against a deck which destroys lands
Against a deck which counters spells
Against a deck which destroys artifacts and/or enchantments
Against a deck which taps an opponents' creatures/lands
Against deathtouch and Loyal Sentry

Other thoughts:
Find way to restore critical artifacts if put into graveyard
Find way to restore critical artifacts if put in exile
Find way to play critical artifacts from the library
Be able to draw cards quickly (not just lands)
Use 6 dice (WUBRG and colorless [grey]) to keep track of mana
May be able to make this Standard format
Must be able to make use of mana if there is an abundance
Must have a "progressive mana" plan
Need plan if drawing low number of lands in first couple turns