Even after the nerf there is still no effective way to deal with a first turn ord stone played by the opponent. Aside from nerfing it up to 4 flux here's some new cards that might deal with it:

Ord stone hater#1
X 1 creature
aloft
can only attack buildings
1,2,5,1,0

Ord stone hater#2
X 1 spell
destroy all buildings with 0 vision.

Ord stone hater#3
X 2 spell
target creature is moved to a random space next to an enemy base

Ord stone hater#4
X 2 world enchantment
no flux is given from figures (or spells)

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I play with OS a lot currently and I can assure you that OS on 1st doesn't mean that you won, unfortunately. And it's not because your op. plays OS as well.
There are many tactics out there that can win against Ord Stone.
and with 2 lifes it's SO fragile already...

agree with Zurken. for comparison, DL can cast graveyard on round one, altar on round two, and nether plasma on round three -- for +3 flux by round four. an ord cast on round one won't see +3 flux until round seven. if anything is overpowered here, it is NP.

that being said, if ord were to be nerfed, I think it should reveal for all players.

I think hater #4 is a good way to balance things out, considering Acmar's already levels the playing field. Hater #1 also looks cool.... i'd actually like to have one of those in my deck .
If you plan to beef the cost up, then add armor 2, so I can actually destroy one of those damn earthworks or obelisks.

And NP isn't really that OP, it's just rather.... really playable... plasmacade .

im thinking i for the most part agree with the others..ord stone can be tough but nerfing ord would or even making counters for it just doesnt seem realistic when it only has 2 life and takes 3 rounds to pay itself off.....it offers no protection nor attack....other than offering more flux at later rounds its not that harmful...i agree if not dealt with tho it is annoying. considering ur suggestions.....# 2 is insanely op and would not only counter ord stone but many other cards as well...if ord stone costs 3 it would seem only realistic that something that destroys ord stone and other buildings would cost at least 4 and if its 1 domain...id say 4 flux at least. and # 4 card also way op...it not only disables ord stone but cards like gather and scorched. maybe if u took off the idea of "spells" and just made it figures it would be less op...but as is...it should cost at least 3 since it disables so many cards....#3 and #1 seem more realistic. i think a cool version of 1 would be called woodpecker and make it a sylvan card....since it can only attack buildings.....its not that hazardous.......i think a person could handle it and it wouldnt ensure destruction of their ord stone...yet it would still be a pretty playable card at 1 flux 5 movement..i think the first one seems most realistic.

I dont think ord stone is anywhere near as bad as netherplasma.

Netherplasma gives 3 flux and pumps up feeders as well as can be a wall.. or vision... or a claimed in blood card.. or to pay 1 flux for a card advantage with nefarious research... it has a ton of additional synergy. But your using nether plasma so its probably ok.

I think it pumping up feeder alone is worth another 1 flux. (see slumbering titan)