Hearthstone’s newest update is here, and there’s a lot of adventure to be had – join the Mercenaries as they fight through their first dungeon in the Barrens, with the 35 new collectible card Wailing Caverns Mini-Set. Get to know Xyrella and Guff through their respective Book of Mercenaries chapters starting June 3 and June 15, respectively. Malfurion’s tale will be told in the newest chapter in the Book of Heroes, starting June 22.

WAILING CAVERNS MINI-SET (Out now)

Brace yourselves for the dangers that lurk within the Wailing Caverns… The Wailing Caverns Mini-Set, consisting of 35 new collectible cards, is now live and available for purchase from the in-game or web shop, for either $14.99 or 2000 Gold.

Check out all the cards in the Wailing Caverns Mini-Set

BOOK OF MERCENARIES: XYRELLA (Out now)

The Draenei called it The Night of Falling Stars, when shards of fractured Light rained across Azeroth. Guided by a mysterious voice, the priest Xyrella now searches the Barrens for the glowing shards which the voice promises can save her daughter’s life. The priest’s quest will be explored in Book of Mercenaries: Xyrella, launching June 3rd.

Book of Mercenaries: Xyrella is the second chapter in a FREE ten-part serialized story that will play out across the Year of the Gryphon. Completing this linear adventure will reward 1 Priest Pack, containing only Priest cards from Standard.

BOOK OF MERCENARIES: GUFF (June 17)

Guff Runetotem has always just wanted to help, but when “helping” means accidentally starting a treant rampage that nearly flattens Thunder Bluff, Guff vows to set things right. His quest for redemption leads him and his companions to the Wailing Caverns. What Guff finds inside will be revealed in Book of Mercenaries: Guff, launching June 15th.

Book of Mercenaries: Guff is the third chapter in a FREE ten-part serialized story that will play out across the Year of the Gryphon. Completing this linear adventure will reward 1 Druid Pack, containing only Druid cards from Standard.

BOOK OF HEROES: MALFURION (June 23)

As the first druid, Malfurion has solemnly defended the natural world from threats, including his own brother, for thousands of years. Despite his steadfast protection, the perils of Azeroth have only increased with time, and the enemies of the wilds grow in both strength and cruelty. Malfurion’s harrowing tale will be told in Book of Heroes: Malfurion, launching June 23. Completing this linear adventure will reward 1 Druid pack, containing only Druid cards from Standard.

Check out the 20.4 patch notes for more details