27.4 Patch Notes

news.blizzard.com:

Patch 27.4 brings the Fall of Ulduar Mini-Set; Yogg-Saron has escaped and is spreading his Anomalies across Hearthstone!

The titans left their charges to watch over the imprisoned Yogg-Saron, but no prison lasts forever. The Old God has escaped to once again wreak havoc on Azeroth! Will you fight back, or will you succumb to the madness within?!

There’s a new Titan in town. Cast spells to fuel the Old God’s power, bring madness to the Tavern with Chaotic Tendrils, and unleash Yogg-Saron on your opponents with this Mini-Set of 38 all-new cards. Get them in TITANS packs, or as a complete 72-card* Mini-Set. Get the normal version in-game for $14.99 or 2000 Gold, or get the all-Golden version for $69.99 or 10,000 Gold. The all-Golden version also comes with a bonus Diamond copy of the Yogg-Saron, Unleashed Legendary minion! You can see all the cards from the Fall of Ulduar Mini-Set in the official Card Library.

* 4 Legendary cards, 1 Epic card (2x), 17 Rare cards (x2), and 16 Common cards (x2).

It’s all so clear now: Yogg-Saron's whispers have been corrupting Battlegrounds this entire Season. Now, Yogg-Saron has escaped, and Anomalies are appearing in Standard, Wild, Twist, Casual, Arena, and Practice Modes, too! The following Anomalies have been unleashed upon the Tavern:

For one week following the launch of Patch 27.4, Anomalies will appear in 100% of Standard, Wild, Twist, Casual, Arena, and Practice Mode games. After that one-week period, they will appear in 25% of games until Patch 28.0. Cho’gall, Twilight Chieftain’s effect offers an additional chance for an Anomaly, meaning that you could have up to two Anomalies active in a game during this event period if you and/or your opponent have Cho’gall in your deck(s). In games