Why Hearthstone’s Frozen Throne expansion matters to Warcraft fans

Blizzard has excited many of Hearthstone‘s fans by announcing that its next expansion, Knights of the Frozen Throne, will take players to Icecrown Citadel. But if you’re one of the digital card game’s many players who doesn’t have much Warcraft knowledge, you might be wondering what the fuss is about.

Icecrown Citadel is the final raid (large dungeons that require many players to beat) in the hit massively multiplayer online role-playing game World of Warcraft’s second expansion, 2008’s Wrath of the Lich King. The Frozen Throne, where the Lich King controls an undead army, sits at its peak.