Hearthpwn

I’ll disenchant my extra cards from the rotating sets, but I want to keep cards which have the slightest chance of breaking wild in the future (like Shadowboxer or Dreadsteed). 

Can you think of any?

The normally do not nerf wild cards. 

Yeah, they don’t, yet they still have a few times.  Let’s get back to the point, please.

Since all rotating cards are already in wild i think if they are gonna nerf anything it's gonna be cards from RoS.

I wouldn't be surprised to see baku and genn get banned for certain problematic classes (baku- paladin, genn- shaman for example) in the future, but not anytime soon. I would imagine its hard to make cards that have good value in standard while avoiding simultaneously making  decks too broken with the baku/genn mechanic (Aviana/innervate before their nerfs comes to mind)

Literally any card can potentially break wild at some point given the right circumstances.

This is impossible to tell.

But there are cards that have a better chance at it,you need to look at cards with unique effects ,mana cheating has been proven as wild breaking that's why both skull of the menari and possessed lackay have potential,I think dmh can lead towards a deck that almost no one can beat, valeera the hollow could lead to an op combo,if mill druid gets support neutralize can be an enabler 

Probably Genn and Baku.

Even though I opened a normal Genn in a pack, I still crafted it golden. As Even/Odd might be problematic in the future, I have two Genns in case plus the golden Baku.

I would look out for cards in degenerate decks.  Big Priest is already on their radar.  It might be helpful to look at other card games to predict keywords or mechanics that Blizzard might 'borrow' that could break the game.

Same. Crafting these two in golden is essentially free now, and if there’s a slight chance of a future neerf it’s worth it.

I keep all my copys of UI and defile