I've seen quite a few mentions on these forums of Warpstone Excavation being used in decks. 0 cost for 1 power (and non-limited) is pretty solid in theory, but isn't Corrupting every unit you play in one of your zones quite a big cost? I understand its useful in duplicates, but in a game with a card limit of 3x running it just for this reason is surely questionable? I think one of the best uses for this card (and something I intend to try out when I get my sets) is to hold all copies of Warpstone Excavation that you draw until your first non-Battlefield zone is burning (your battlefield shouldn't get burned too quickly if you're an aggressive deck should it?) then play all of them to that zone for free, generating extra cards/resources.
Contested Village on the other hand looks pretty solid in my opinion, 1 cost for 1 power in either Quest or Kingdom is surely worth it? Limited is quite easy to get around thanks to the ability to slip a second copy face down as a development, and its unlikely you'll have all three in hand at once. Looking over the Corruption cards, I can't see another card that costs 1, provides 1 power and can be played to a zone other than Battlefield (however, for the Empire I can't help but find Huntsmen quite an interesting card.)
So, which of these (if any) are people planning to run in their constructed builds?