Royal hall lvl11??

[Sumercarefree]

To answer the original question:
Royal Hall 11 unlocks Elite Barracks 11, and also Ballista 5.
Elite Barracks 11 unlocks the Undead troop.

9 million coins and 12 days for the new RH upgrade.
10 million coins for the new Ballista upgrade.
4.5 million spellstones for the Elite Barracks upgrade.
Info on the Undead can be viewed from any level barracks. It does not get a promotion, so it comes maxed.

Thanks better try the Undead before they cut down its powers, just like the Bears !