Take the fight to three new bosses and the 'finest undead knights' of Naxxramas
The third wing in a run of five, The Military Quarter in the words of Blizzard, “is home to Naxxramas’s finest undead knights, ready to take on all interlopers that dare test their skills in battle. Victory over these masters of melee will reward you with all-new Hearthstone cards!”
Successfully beating each of the three bosses in the Military Quarter will unlock two copies of the Dancing Swords, Spectral Knight and Deathlord cards. Victory over all three grants you the Baron Rivendare Legendary card.
There are also two class challenges on offer with class specific cards rewarded to those who overcome them
The final two wings of Naxxramas, entitled The Construct Quarter and Frostwyrm Lair are due to be unlocked over the next fortnight.