Now that theVoyage to the Sunken Cityset has been available inHearthstonefor a few months, players are ready for the next phase of content. With that in mind,Hearthstoneis releasing Patch 23.4, which introduces the “Throne of Tides” Mini-Set, new content for Arena, Battlegrounds, Mercenaries, and Solo Adventures, and a crossover celebration for the release ofDiablo Immortal.

The “Throne of Tides” Mini-Set is themed after a showdown between the kraken-like leviathan Ozumat and Neptulon, the elemental lord of water ofWarcraftfame. These new Colossal minions are two of the 35 new cards coming toHearthstonewith the new set.

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Ozumat is also coming to the Battlegrounds mode as a new hero. But he’s not the only one–Diablo, the Lord of Terror iscoming toHearthstoneBattlegroundsonce again for one week only to celebrate the launch ofDiablo Immortal.

Hearthstoneis getting anotherDiablo Immortalcrossoverin the Mercenaries mode. Tyrael, the Archangel of Justice, is being added to the mode as a free Mercenary for all players. He’s not alone–a total of 18 new Mercenaries are coming to the mode, including Azshara and her naga, Maiev, Yrel, and more. The Old God Y’Shaarj is getting a limited-time event like N’Zoth did before him, and 13 new bounties are being added across the existing Darkshore zone and the new Sunken City zone.

Voyage to the Sunken Cityis also getting its first Solo Adventurein the form of Book of Heroes: Faelin. The 17-mission story features the Nightbourne ambassador’s expedition to the ruins of Zin-Azshari. The adventure has three playable characters–presumably Faelin, Ini Stormcoil, and Sir Finley Mrrgglton–with the chance to get the Ghost Ship card back and two packs for completing the adventure with all of them.

Hearthstoneis also beginning a new Arena season, which includes an update to the card rotation. In addition to the current cards found in Standard,The Boomsday ProjectandDescent of Dragonssets will be added to theHearthstoneArena pool as well.

In addition to all of this, thisHearthstonepatch includes dozens quality-of-life improvementsand bug fixes, the most notable of which is the Overcapped Decks feature. With this feature, players can add up to 50 cards to their deck while building it, though they will still have to parse it back to 30 to play the deck. This will allow players to compare cards and experiment with ideas much easier than before.

Hearthstoneis available now for mobile and PC. Patch 23.4 launches on June 1st, including most of the features in the patch. The Y’Shaarj Mercenaries event begins on June 7th.