Advanced Awards - 6 Crypt keys for 5 Tag Team Arena battles. When claimed, I was informed I would lose my unused keys. I went to check and there were 12 keys for the Skinwalkers ( I have no such Champions), so I went back to accept the loss of Skinwalker keys in exchange for the 6 awarded keys. I not only got 6, but an additional 6 for the third open crypt ( Barbarians and Dark Elves also open), AND the 12 skinwalker keys were not removed. Bug, or just really nice people?