I think it might be too late. Meddling Mage already went from $8 to $12 per card already. that's a huge jump in price for a time period of just 1 week. The time to buy low has already passed somewhat.

Also, it's not really "confirmed" per say, since it's just some mod that decided the evidence from the orb was "overwhelming". There really hasn't been an official source or something that stated it was there.

Though I personally think they are going to print it. At least I hope so, I need to get my hands on some MM from drafts!