Theory: Aurelion Sol vs the Watchers
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I thought of the watcher's Eye when I first saw this. Looking closely at the teaser image we can sort of see a Dragon's eye (maybe) in the top right and a claw below the "Eye". The claw seems to have maybe 3 fingers like the watcher having 3 and a thumb.
Maybe Aurelion is going to repel an invading Watcher as his release Lore?
