Leeroy will be sent to HoF when the next expansion launches (April 7th)
if you have both golden and normal version you will only get refund for the golden one (but I'm not 100% sure about that)
12-2 with warrior deck that didn't look so good at first, but an aggressive play with some lucky tip-decks allowed to get to the top. also one of the losses with because I made the stupid mistake of killing his dragon before playing my poacher which kept his 5/5 alive to kill me a few turns later.
rewards: mostly gold + a golden rare and a pack
Mogu fleshshaper was actually buffed! Now mutating it will give you a 10 drop. :p
how I see it:
when you use the coin on turn 9 you have 9 "permanent" mana crystal and 1 temporary mana crystals, then you play devastator and you use the temporary crystal + 3 permanent, so you have 6 permanent + 3 used crystal (=9 crystal) when it checks the battlecry condition
edit: this can be checked by using floop's gloop and knife jugglers so when you play the devastator, the jugglers kill some minions to raise you current mana to 10 before the battlecry starts