Update - June 19, 2015 : We're pleased to inform you that anyone that's toppled 100 Play mode opponents in Hearthstone can now claim the Cardback Mount reward mentioned below.

In order to do this, simply log in to Hearthstone to complete the Easy Rider Quest, and then fire up Heroes of the Storm to receive your new Mount! Please also note that the Cardback Mount may take up to 24 hours to appear in your Heroes Mount collection.

World of Warcraft

World of Warcraft is teaming up with Heroes of the Storm to celebrate the launch of Blizzard’s new free-to-play team brawler with an epic Grave Golem pet—summoned into Azeroth straight from Heroes’ Haunted Mines map! Beginning June 2, anyone who reaches Player Level 20 in Heroes of the Storm will be awarded a Grave Golem in World of Warcraft. To unlock this accursedly endearing creature once you’ve reached your goal, simply log in to World of Warcraft after Heroes launches on June 2 and claim your reward.

That’s not all: if you reach level 100 with any character in World of Warcraft, you’ll earn an Ironside Dire Wolf mount to use in Heroes of the Storm—an epic ride to represent your legendary accomplishments on Azeroth and Draenor.

Both rewards will be available starting June 2, 2015, after Heroes of the Storm officially launches. If you’ve already reached Player Level 20 in Heroes of the Storm or level 100 in World of Warcraft, your rewards will be waiting for you once they’re activated in-game on June 2.

Hearthstone

Starting today, any players who reach player level 12 in Heroes of the Storm will unlock a slick Heroes-themed Cardback for their Hearthstone Cardback collections. Not to worry if you already reached level 12 prior to June 2, because this new Cardback will be added to your collection during Heroes of the Storm’s launch week.

In the weeks to come, we’ll also award any players who have won 100 matches in Hearthstone’s Play Mode with the brand new Hearthstone Card Mount in Heroes of the Storm. This Mount won’t be available on launch day itself, but don’t worry – we’ll let you know just as soon as it arrives. If you’ve already reached 100 wins in Hearthstone, you’re all set to receive the Mount when it’s awarded. If you haven’t quite toppled 100 opponents just yet, then now’s the perfect time to start racking up games in Play Mode!

New to Heroes of the Storm? You can download our Hero Brawler here. Good luck and we’ll see you in the Nexus!