Blizzard has announced that this year's BlizzCon will be held on November 7 and 8 at the Anaheim Convention Center in Southern California. Tickets will be on sale from May 7 onwards.

The convention will, as usual, play host to all of Blizzard 's current and upcoming games, including the promising-looking MOBA Heroes of the Storm and World of Warcraft's new expansion Warlords of Draenor. It will also celebrate Blizzard's support of e-sports with the StarCraft 2 World Championship Series Global Finals and, for the first time, the _hearthstone World Championships.

The first World Championships for Blizzard's excellent collectible card game will see sixteen players from around the world battling it out for the title -- four each from the Americas, Europe, China and Korea/Taiwan. In order to participate, you'll need to do one of several things depending on your home territory -- full details can be found on Blizzard's website.

Get building those decks.

For those in the Americas, the top 16 Legend players from the Ranked Play seasons from April through August will be invited to participate in the Americas _hearthstone Qualifier tournament, as will top players from community-run tournaments in the same period. The top 3 players from as-yet unannounced licensed events will also qualify for the tournament, and a Last Call tournament will be held immediately prior to the Qualifier tournament if there are any spaces left over. The Americas hearthstone Qualifier tournament itself will be an online best-of-five arrangement, with the top 4 players going forward to the live World Championships at BlizzCon.

As for the World Championship finals, they too will be best-of-five matches, with three decks per player per match. Each player must bring three decks of different classes and change decks when they lose a game. The match continues until one player wins three games.

Blizzard hasn't yet announced further rules or indeed a prize for the World Championships; keep an eye out for that information at a later date. And if you haven't yet played hearthstone, here's Jaz to tell you why you should give it a shot.