A ring of magical crystals circle around the handle of the weapon this rune has been etched into, allowing it to absorb and store magical energy.
Activate; Reaction; envision; Trigger You Cast a Spell from a spell slot, and the spell has the acid, cold, electricity, fire, or sonic trait; Requirements The weapon has no charges; Effect You mentally align the weapon's crystals to reverberate with energy from the spell. It gains a number of charges equal to the level of the spell slot, and the charges are attuned to the damage type matching the spell's trait. If the spell has more than one eligible trait, choose one when the charges are stored.
Activate; 2 Actions; command, envision (evocation, magical); Requirements The w eapon has at least 1 charge; Effect You flip the weapon around to blast a cone of energy from its base. Each creature in a 15-foot cone takes 1d6 damage per charge stored within, with a basic Reflex save against your spell DC or DC 19, whichever is greater. The damage type is the same type the charges were attuned to. It loses all of its charges.