Hearthstone players will be able to get in on some Hallow’s End action starting October 24th. During the first week, just logging in will earn you a free Whispers of the Old Gods card pack and an Arena Ticket. Week two nets you a Knights of the Frozen Throne card pack and another Arena Ticket. In addition, you can take part in a brand new “dual class Arena mode” where you choose a Hero and a Hero Power from another class and combine them. Heroes will be in costume too.