Hearthstone retires 150 cards and introduces a limited format

The collectible card game is trying to balance accessibility for new players with pleasing the hardcore gamers

Hearthstone, the collectible card game from Blizzard, is about to undergo its biggest shake-up to date, with more than 150 previously released cards being declared illegal in standard games.

Cards from the first two expansion packs to be released, July 2014's Curse of Naxxramas and December 2014's Goblins vs Gnomes, will no longer be playable in normal games. They will, however, be allowed a new format, called "Wild".