Children of the Forest. Three-Eyed Crow. The White Walkers (literally the first scene). Dire Wolves were obviously south before because that is the second scene...What? What magical shit (other than the wall which existed for 8k years) was in the world prior to the comet? Dire wolves showed up south of the wall around the same time
Then you have bloodmagic of the maegi, the necromancers of Qohor, the Red Priests...
TONS of magic before the comet showed up.
Edit - Fuck you Tarrant.
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