Vulcan, Blacksmith of the Flame:
Here are the ingredients for Mimir's Elixir.
Go to the basement floor of the Ivory Tower where all the shops are, and you will see an Alchemist's Mixing Urn. Put in all the ingredients I gave you and mix them.
On your way back here, tell Magic Trader Wesley that I sent you. Then he will send you back here with his scroll. I have been giving him a ton of good stuff.