Tome of Understanding

Very Rare

DMG'24 p317 Wondrous item, very rare 5 lb. This book contains intuition and insight exercises, and its words are charged with magic. If you spend 48 hours over a period of 6 days or fewer studying the book's contents and practicing its guidelines, your Wisdom score increases by 2, as does your maximum for that score. The manual then loses its magic, but regains it in a century.

Rod of Hellish Flames

Very Rare

Rod, Very Rare (Requires Attunement by a Spellcaster) Glowing cinders orbit the flanged head of this black iron rod. This rod can be used as an arcane focus. While holding this rod, you gain the following benefits: Hellish Resistance. You have resistance to fire and necrotic damage. Searing Rebuke. You can cast the Hellish Rebuke spell as a 4th-level spell (save DC 16) from the rod. Once you use the rod to cast the spell, the rod can’t cast the spell again until the next dawn. Surge of Brimstone. Whenever you cast a spell that deals fire or necrotic damage, you can use the rod to deal the maximum damage instead of rolling. Once this property is used, it can’t be used again until the next dawn. This item can be found in The Book of Many Things. Wicked. When the bearer is presented with an opportunity to act in a selfish or malevolent way, the item heightens the bearer's urge to do so. This black iron rod still feels warm to the touch despite having been removed from Mogdol's possession for quite some time. Affixed atop is the broken horn of a balor you recognize from a past encounter. That at least that explains why D'Alva was so hellbent on destroying Mogdol.