Of course, maybe you’re not very good at the Tavern Brawl format, and that’s all right. You can also get rewards from the game just for logging in, from March 29th to April 5th. Logging in on the last day will give you a gold Volcanosaur card, which is a real mammoth challenge in battle (once again, that’s metaphorical; it isn’t actually a mammoth). So get ready to log on daily and start trumpeting about all of the cool stuff in the crater. (Also, that’s probably metaphorical, although you can probably play a trumpet about it if you really want to.)
Hearthstone players start trampling through Un’goro Crater (metaphorically), the Year of the Kraken will end. It’ll be time for the Year of the Mammoth, and that means it’s time for a new event with some mammoth (metaphorical) rewards. It all starts with the Mammoth Brawls, which reward players with a pack of cards upon victory; the first one was back on March 15th, but the next is coming up on March 29th.
Source: Official Site