Every Single Major Death We've Seen in Season 7 of Game of Thrones

This might be the most heartbreaking death of the season so far. In the penultimate episode of season six, Daenerys jumps on her dragons and goes to rescue Jon Snow and his comrades beyond the Wall. She brings all three of her dragons, and, in a horrible twist of fate, the Night King is quite prepared. Using a single ice javelin, the Night King takes down Viserion, who sinks into the icy waters below and eventually becomes an undead ice dragon.