A patch for Hearthstone just went out, Changes:

• Fixed an issue that could cause Sidequests to prevent Questing Explorer from drawing a card.

• Fixed an issue where Storm Egg had Rush.

• Fixed an issue with the Happy Hallow’s End quest that could prevent players from completing it.

• [Tombs of Terror] Fixed an issue that could cause the Battle Scars anomaly to prevent the player from progressing after ending a plague lord encounter with a tie.

• [Tombs of Terror] Fixed an issue with Murky’s Battle Horn that could cause both heroes to be destroyed.

• [Arena] Dragonmaw Poacher is no longer draftable.

• [Arena] Lightforged Zealot is no longer draftable.

• [Hearthstone Battlegrounds] Primalfin Lookout has been moved from Tavern Tier 4

• to Tavern Tier 5.

Good News: This is not the only update before the Holidays!

– Source