You are scaling the highest peak in Midgard, trying to get to the top. While there, you hear the two sons of Odin and Baulder talking to a tree, insulting it. They leave, and after making sure they left, you climb to see the tree. But it's not a regular tree! There's an old man stuck inside the tree.

Mimir: Well if isn't the very topic of conversation! My name is Mimir, The Smartest Man alive!