Come Explore the Caverns of Time

news.blizzard.com:

The Infinite Dragonflight is trying to change the timeline so that the Old God C’Thun wins the Battle of Ahn’Qiraj. The fate of the world—and all time—will soon be in your hands!

Caverns of Time includes 147 total cards: 34 brand new cards and 113 buffed reprints. There are also 15 Signature versions of iconic cards from the past that can be found in Caverns of Time packs! Caverns of Time is a set unlike any we’ve ever done before, and we’re excited to delve deep into its mysteries here.

Caverns of Time is launching on August 31, the day before the official launch of Twist! It’s important to note that Caverns of Time will not be legal in Standard when it launches. Instead, it’s Hearthstone’s first ever direct-to-Wild expansion, designed with Wild and Twist in mind.

When Twist launches on September 1, it will feature the Wonders format: a throwback to the early years of Hearthstone, including all expansions from Legacy (not Core) through Mean Streets of Gadgetzan, plus Caverns of Time.

Caverns of Time includes 34 all-new cards: 9 Common cards, 10 Rare cards, 8 Epic cards, and 7 Legendary cards. We were able to bend time and space to get you a sneak peek of these new cards before Caverns of Time arrives! Don’t be alarmed if things look a little different in this timeline; Caverns of Time travels back to before Death Knight and Demon Hunter were added to Hearthstone, so they’re sitting this set (and this first official Twist format) out.

Druid

Hunter

Mage

Paladin

Priest

Rogue

Shaman

Warlock

Warrior

Neutral

 All 147 Caverns of Time cards, and their tokens and related cards, will be viewable in the Official Card Library once Patch 27.2 is live.

The other 113 cards in Caverns of Time are cards from the past, strengthened