Myrddin's Chronicle is a Maister tome for the Sorcerer vocation. Reading it teaches Maelstrom, a whirlwind that works best in cramped spaces, to the Arisen and the main pawn.
The Sorcerer's Appraisal is a side quest given by Myrddin in Checkpoint Rest Town. It starts on visiting his home while wearing both the Courtly Tunic and the Courtly Breeches. Handing over the grimoires completes the quest and earns Myrddin's Chronicle.
Get the courtly attire by finishing The Ornate Box, or loot the chest in the guest chambers on the second floor of Vernworth Castle.
Equip both pieces and enter Myrddin's home. He asks for rare grimoires for his research.
Climb the broken wall on the right side of the house and jump onto the upstairs balcony. Take Let There Be Light from the desk, and stay off the inside stairs, as Myrddin attacks intruders he catches.
Buy Fulminous Shield from Dudley, the merchant carrying a camping kit near the entrance of Melve.
Finish Tolled to Rest first, then collect Nation's Death Knell from the Ancient Battleground.
Open the glowing chest on the second floor of Waterfall Cave for Howling Blizzard. The chest summons a Lich. Wendy in the Nameless Village also trades the tome for a forged Fulminous Shield.
Complete The Caged Magistrate, then speak to Waldhar in the vaults of the Gracious Hand for Towering Earth.
Pay Ibrahim in Checkpoint Rest Town to forge copies, and keep the originals for Trysha in Spellbound.
Hand three grimoires to Myrddin to complete the quest.
