Wild cards have returned to Hearthstone's Arena. on their performance with their deck, equal to the Arena reward structure as seen below. First of all, dust has always been a completely useless reward in the Arena in the given amounts. If they gave like dust then it would be. Each Key grants the player a number of prize boxes as rewards. The contents of each prize box are determined randomly. Virtual Ticket also unlocks a $10 discount on this year's Goody Bag, featuring a collection of commemorative gear to mark the Hearthstone BlizzCon Items.