While there have long been theories about Cersei becoming the Night Queen, we are digging the death scenario Tyrion imagines for his sister during a fireside chat about his own potential demise at the hand of the White Walkers in the season eight episode titled "A Knight of the Seven Kingdoms": "At least Cersei won't get to murder me. I'm sure I'll feel some satisfaction denying her that pleasure while I'm being ripped apart by dead men. Maybe after I'm dead, I'll march down to King's Landing and rip her apart."