Hearthstone unleashes chaos March 17, 2026, with CATACLYSM—the card game’s most destructive expansion yet. Blizzard announced February 9 that the undefeated Deathwing is invading from an alternate timeline, bringing massive Colossal minions and game-changing mechanics.
Table of Contents
Hearthstone CATACLYSM Key Features
| Feature | Details |
|---|---|
| Launch Date | March 17, 2026 |
| New Cards | 145+ collectible cards |
| Hero Card | Deathwing, Worldbreaker |
| Keywords | Herald, Shatter (new) + Colossal (returning) |
| Free Legendary | Warmaster Blackhorn (login reward) |
Pre-orders available now through March 17 with exclusive bundles and cosmetics.
Deathwing Hero Card Changes Everything
The first-ever Deathwing Hero Card transforms you into the Worldbreaker with devastating Cataclysm abilities. Choose from four destruction modes: topple enemy minions, raze the board with flame, enthrall minions, or summon dragon progeny. The new Herald keyword amplifies power—use Herald four times to unleash all four Cataclysms simultaneously.
Herald and Colossal Mechanics Explained
Six Deathwing-aligned classes (Death Knight, Demon Hunter, Rogue, Shaman, Warlock, Warrior) gain Herald, which summons Colossal Soldiers with appendage abilities. Each Herald use doubles their power—twice for 2x strength, four times for maximum devastation.
All 11 classes receive Legendary Colossal cards. Warrior gets Ragnaros, the Great Fire, while Paladin commands Chromatus, Nefarian’s five-headed nightmare.
Dragonflight Defense and Shatter Keyword
Five dragonflight classes (Mage, Priest, Druid, Hunter, Paladin) counter with Legendary Dragon Aspects like Hunter’s Ebyssian, Black Dragon Aspect, who transforms from humanoid to dragon form with Rush abilities.
The Shatter keyword breaks cards into two pieces placed at opposite hand ends. Reunite them by playing cards between to create doubly-powerful combos—perfect for strategic deckbuilding.
Free Cards and Community Event
Log in for free Legendary Warmaster Blackhorn. March 10-17, access full Into the Emerald Dream and Lost City of Un’Goro sets via Dream City Trial Cards. Rally the dragonflights at Blizzard’s event page to unlock free Legendary Ebyssian and Signature Envoy of the End.
Pre-Release Tavern Brawl runs March 10-17 for early Deathwing testing. Explore deck strategies on our Hearthstone guide.
FAQs
Can I play CATACLYSM cards before March 17?
Yes, Pre-Release Tavern Brawl (March 10-17) lets bundle buyers test new cards early.
Are Colossal minions new to Hearthstone?
Colossals debuted in Voyage to the Sunken City; CATACLYSM enhances them with Herald scaling.
