[Huge spoilers for Game of Thrones season 7 - stop reading if you haven't seen it!] After watching the final episode, I was wondering how the Army of the Dead would have invaded Westeros without the If we know that the Wall's magic keeps them out, then how did they plan to attack it before t...

We know that Daenerys can speak Valyrian. However when she is at Meereen as Queen, and also in the towns before it, she needs Missandei to translate for her what her people are saying in Valyrian. However we have seen her speak Valyrian, for example at the slave master of Astapor. So, why does sh...