Match: Grand Halloween Chest

Edit: I finished, and this is what I got.Grand Halloween ChestNotice how the unlimited hearts started before I claimed them.Original Post:For anyone who plays AB Match, have you earned the Grand Halloween Chest, and if so, what is in it?  The chest is the reward for completing all 6 of the challenges for the Halloween event and it apparently has "Great Rewards!"  I'm at the end of the third challenge, and will post what it is if (IF) I finish.