I completely understand and feel the same way. I've also taken some profit. I'm not sure how OP Thawed Heart will be. It is definitely good for control light, and it definitely wrecks anubians. However, I don't think you're that worried about running into control light on the ranked ladder these days. Aggro light shouldn't run it.

I did just buy 4-5 copies of the top MJ rares. I think Unbound Flames in particular is a must-have for Magic. I'm guessing it will increase in value kind of like Armor Lurker did for Deception. Every magic deck wants it. Ditto for the new Light's Levy MJ card.