Unbowed Hero

Magilmamourn (Fabled)

This black metal longsword has a sinister appearance, with cruelly sharp arced angles, and matching large sapphires on both sides of the hilt that radiate electrical energies when the blade is wielded. It has a powerful magical aura, and is semi-sentient. A bearer with Intelligence 4+ has a clear sense that the weapon wants to be wielded in pursuit of retribution and feels urged to retaliate when attacked.

Reluctant Dismissal. To sheath, drop, or relinquish this sword to another, the bearer must have used it to deal damage to someone that has attacked the bearer within the last hour, or must make a DC 17 Wisdom save. Alternately, Remove Curse or similar magics can be used to allow the bearer to either sheath or drop the weapon.

Retributive Blade. Versus creatures that have attacked the bearer in the same combat, this weapon has a +1 bonus to hit and deals +1d4 Lightning bonus damage.

Fabled Abilities

The following abilities are unlocked for an attuned character of the indicated character level or higher.

Character
Level
Fabled Ability
5
Lightning Affinity. This weapon has 3 charges and regains 1d3 charges each Dusk. As a Bonus Action you may expend 1 charge while holding this weapon to cast the spell Witch Bolt without need of spell components and with a Duration of 1 minute (no Concentration). Additionally, the bearer has Resistance to Lightning damage.
9
Improved Retributive Blade. Retributive Blade improves to +2 to hit and 1d6 bonus damage.
13
Ride the Lightning. This weapon now has 6 charges and regains 1d6 charges each Dusk. As a Bonus Action you may expend 3 charges while holding this weapon to cast the spell Lightning Bolt without need of spell components. If you do, you may also teleport to any unoccupied space along the path of the Lightning Bolt's area of effect immediately after the spell resolves.
17
Improved Retributive Blade. Retributive Blade improves to +3 to hit and 1d8 bonus damage.