Guessing the New Edwin

My guess is 3 mana 2/2 "gain +2/+2 for every card you traded this turn". Seems the most logical. What's your guess?

That seems like a very plausible design, but I'm not even sure it would be good enough to bother with since every trade costs 1 mana. So you'll at best get a 4/4 on turn 4, a 6/6 on turn 5 etc. By the time you are appreciably above vanilla stats, it's too late to matter.

The design I've had in mind is rather more defias focused: [insert stats here] with "Combo: add a random defias card to your hand for each card you played this turn." That way he serves as a value bomb in pirate decks, while also being a burgle rogue card due to defias cards being spread across most classes. It's also tells the character's story much better than a tradeable mechanic would.