Everything you need to remember from Season 6 of 'Game of Thrones'

Beware, for this post is dark and full of spoilers for Game of Thrones Season 1-7 
Valar morghulis, friends. You've just entered Mashable's Citadel, where we are Rewatching for the Throne, dissecting Game of Thrones season by season to prepare for the final six episodes beginning on April 14. 
Here are all the best Season 6 theories, unanswered questions, unresolved plots, and forgotten tidbits you need to remember before winter comes for the endgame in Season 8.
1. What matters about