11 examples of George R.R. Martin’s subtle foreshadowing in A Song of Ice and Fire

7. The Ghost of High Heart predicts Sansa’s future

"I dreamt a wolf howling in the rain, but no one heard his grief,” the dwarf woman was saying. “I dreamt such a clangor I thought my head might burst, drums and horns and pipes and screams, but the saddest sound was the little bells. I dreamt of a maid at a feast, with purple serpents in her hair, venom dripping from their fangs. And later I dreamt that maid again, slaying a savage giant in a castle built of snow. Arya, A Storm of Swords"

This quote comes from the Ghost of High Heart, whom Beric Dondarrion has paid to tell him her dreams, since they are known to contain snippets of the future. It foreshadows the maid, Sansa, and the poisoned hairnet given to her by Ser Dontos. She wears it at Joffrey’s wedding, and Olenna uses it to kill the king.

As for the bit about that same maid slaying a savage giant in a castle built of snow, that may be foreshadowing something that has yet to come to pass. In Game of Thrones, Sansa eventually has Littlefinger executed at Winterfell. Might that be where her story is going in the books as well?