Pterodactyl
Plus on block.
Do you mean the revenant and dark lord skins or do you mean a 4th skin for Liu that we don't know about?There's also Darth Liu skin in addition to Reventant.
Fun stuff: seeing how Liu and Kitana have "secret" skin and knowing what exactly that skin for Liu is made me fairly interested in story mode
Where is this gambling statue?I got a Kutie Icon (I think Reptile)
And Eternal Scar Background (75 koins per match win)
Both from the Gambling statue if you bet 1100 koins (did it twice, 1 item per turn)
I tried gambling up to 500 with no results, so don't bother with anything below that.
Did no gambling after that so far but I think it's safe to assume you can get more items from the statue.
I just ran out of coins.