"How many eyes does Lord Bloodraven have? A thousand eyes, and one."Bryden Rivers, known as Lord Bloodraven, appears prominently at the end of A Knight of the Seven Kingdoms. He is one of the more interesting characters in the history of A Song of Ice and Fire, so I'm glad he appears to be coming back to life in Season 6.
You can see the rest here at HBO.com. April is going to be fun!