Yay! WotC is really trying to mess decks that doesn't play lands and spells.
Manaless Dredge is dead, if that cards seems some play. And that leave open two possibilities: LED Dredge with Faithless Looting, and LEDless Dredge with a lot of artifact-destruction sideboard.
I guess that card will mess the entire format, and will be a good candidate for a Ban Hammer, because it hits every deck in the format: Dredge, Reanimator, GSZ.dec (GW/x Maverick, Nic Fit, Bant Aggro), Natural Order.dec (Bant, RUG and Elves), ANT/TES (shutting off
Past in Flames), Snapcaster.dec, Lands.dec.
This will be a tough one, and might bring Tribal and perhaps CounterTop to Tier 1 again, along with Canadian Thresh and U/R Delver (which won't suffer a thing).