Unlock a new Hearthstone hero by leveling up in World of Warcraft
Add a new hero skin to Hearthstone by playing World of Warcraft.
Lady Liadrin is the newest hero in Hearthstone. She's a Paladin, so it's a new skin rather than a new class.
Announced yesterday, you can unlock Liadrin by leveling up a World of Warcraft character to level 20, earning the Fledgling Hero of Warcraft achievement.
The achievement won't be rewarded retroactively, but "anyone who leveled a character to level 20 after 11 a.m. PST on March 11 will be eligible to receive Lady Liadrin."
To find your Hero, pop into the Heroes tab and look at your collection.
You don't need a subscription as you can pick up the Starter Edition which lets you level up your character to level 20 for free.
It's a pretty gruelling prerequisite just to get a skin, but if you haven't played WoW before, it's an incentive to give it a whirl. Although you'll be playing for a good few hours before you hit level 20. Do you think it's worth it?