Elemental Sigil

When you add this sigil to your spellbook, choose one of the following damage types: acid, cold, fire, force, lightning, necrotic, poison, psychic, radiant, or thunder. The inscribed object is imbued with power of the chosen type.

You can add this sigil to your spellbook multiple times, choosing a different damage type each time. Each damage type counts as a different sigil.

Armor or Shield. The first time each turn the creature wearing or carrying the inscribed object would take damage of the chosen type, it rolls your Sigil Die and reduces the damage by the result.

Weapon. The first time each turn a creature hits with an attack using the inscribed object, the attack deals additional damage of the chosen type equal to your Sigil Die.