Seer/GoT

: "Their wise men were called Greenseers and possessed powerful magic."
: ―Bran Stark[src]
Greenseer is the title given to people who possess the magical ability to perceive future, past or distant events in dreams known as Green Dreams. According to legend, greenseers were much respected by the Children of the Forest.
== In the books ==
In the A Song of Ice and Fire books, greenseers were the wise men of the Children of the Forest who had magical abilities that included power over nature and prophetic visions. While one in a thousand men is born a skinchanger, one skinchanger in a thousand is born a greenseer. It is also mentioned that humans can be born greenseers just as they are born wargs.