Recently, there has been a large increase in the ammount of innovation in type 1, and looking to join the band wagon, I have recently looked over as many cards as I could to find cards with potential. These could bring forth new decks, or be used in the board for bad matchups, or any other purpose as seen fit. Some of these may have been mentioned before, so excuse me if it seems I am stealing some one elses tech.
So in no particular order...
Seeds of Innocence
Sorcery

{G}{G}
Destroy all artifacts. They can't be regenerated. The controller of each artifact destroyed this way gains life equal to its converted mana cost.
Possible Uses: I could see this being run in Big O as a sideboard card vs. workshop decks.
Acorn Harvest
Sorcery

{G}
Flashback

{G}, Pay 3 life
Put two 1/1 green Squirrel creature tokens into play.
Possible Uses: Same as above.
Battle of Wits
Enchantment


{U}
At the beginning of your upkeep, if you have 200 or more cards in your library, you win the game.
Possible Uses: Anything that says 'you win the game' can't be that bad. In type 1 you could also support any number of colours for any number of broken cards and tutors.
Ruination
Sorcery


Destroy all nonbasic lands.
Possible Uses: Honestly, I don't know. No sligh deck tends to ramp up to 4 mana, and killing nonbasics has no place in multicolour control. Nevertheless, this is a strong card, albeit a bit pricey.
Gaea's Skyfolk
Creature - Merfolk Elf

{G}
2/2
Flying
Possible Uses: This is a solid little beater. Perhaps used to create UG fish?
Evasive Action
Instant


Counter target spell unless its controller pays

for each basic land type among lands you control.
Possible Uses: Used in multicolour control whose mana bases are a little light on the blue. Not likely, but could see play in budget keeper.
Mogg Salvage
Instant


If an opponent controls an Island and you control a Mountain, you may play ~this~ without paying its mana cost.
Destroy target artifact.
Possible Uses: Anything red vs. Stax. Better then R&R, no, but it is still useful as it can be played for free when under the lock.
Pulverize
Sorcery


{R}
You may sacrifice two Mountains rather than pay ~this~'s mana cost.
Destroy all artifacts.
Possible Uses: More red alternate cc artifact destruction. Woot.
Goblin Tinkerer
Creature - Goblin


1/2.

,{Tap}: Destroy target artifact. That artifact deals damage equal to its converted mana cost to ~this~.
Possible Uses: Kill chalice of the void set to one, since that stops both goblin vandal and gorilla shaman (not to mention all your other dorks and burn).
Roar of the Wurm
Sorcery

{G}
Flashback

{G}
Put a 6/6 green Wurm creature token into play.
Possible Uses: Hulk sideboards. Intuitioning for these vs. aggro = some good.
Gilded Light
Instant

{W}
Cycling

You can't be the target of spells or abilities this turn.
Possible Uses: Vs. Tendril's combo to stop them from killing you, fizzling their entire combo. So much fun.
Upheaval
Sorcery


{U}
Return all permanents to their owners' hands.
Possible Uses: In conjunction with say, gilded lotus, you could generate stupid ammounts of mana, upheaval floating 10^2 mana and then recast everything. A couple of issues with this are that a) too slow, and b) mana drain. Still could be useful, maybe in slavery boards...
Lobotomy
Sorcery



Look at target player's hand and choose a card other than a basic land card from it. Search that player's graveyard, hand, and library for all cards with the same name as the chosen card and remove them from the game. Then that player shuffles his or her library.
Possible Uses: Boards of blue based control decks. While acting as a super duress (for only

more mana

) in a control mirror, this could easily hose dragon. An interesting card that saw play in 1.x (prebannings) and may have its applications in vintage.
So, yeah. Just some ideas I thought I'd share. Feel free to discuss.