Deity with the raven familiars Huginn and Muninn

ODIN

This one-eyed Norse ruler of Asgard often trades wisdom for a sip from Mimir’s well.

This clue refers to Odin, the chief god in Norse mythology who’s often depicted with two ravens named Huginn (meaning "thought") and Muninn (meaning "memory"). The ravens fly across the world to gather information for him, making them iconic symbols tied to his wisdom and power. If you know Norse myths or pop culture references like Marvel’s Thor, Odin’s connection to these birds is a direct giveaway.