Aug 23, 2017 · 1 min read
That may or may not be true on the show, and I can’t even remember if they established that on the show, but it isn’t canon in the books.
“Nor will your sight be limited to your godswood. The singers carved eyes into their heart trees to awaken them, and those are the first eyes a new greenseer learns to use … but in time you will see well beyond the trees themselves.” ADWD — Bran III
The trees are sort of a jumpstart for the powers, but the powers aren’t limited to the trees.
