Stormbringer, Variant (5e Equipment)
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Weapon (Longsword), Legendary (requires attunement)
Storm Bringer is a broadsword crafted from black iron with small bolts of blue lightning occasionally skittering around the blade. Legends hold that it was once wielded by a ruler chosen by a god of the storm, while others theorize that it was forged and enchanted as a symbol of the leader's mishappen belief in their own outrageous claim to leadership.
This magical broadsword gains a +1 bonus to attack and damage rolls. Additionally, this weapon can act as a holy symbol for any cleric from the Tempest Divine Domain. Attacks made with this weapon deal an additional 2d6 lightning damage.
'Fast as Lightning'. As an action, your form becomes a torrent of electrical energy for 1 hour. For an hour, your movement speed becomes 300 feet and are you are immune to any damage. However, while in this form, you cannot speak, you have disadvantage on Stealth checks, and you can not deal damage or cast any spells. By spending 1 minute of undisturbed time focusing on your form, you can revert back to your normal form. You may use this once, regaining use at dawn.
'Thunderous Attack.' By swinging your sword in a heavy slash as an action, you send out a magical force imbued with the strength of a hurricane. All targets within a 30 ft. cone must make a DC 16 Strength saving throw, taking 4d8 force damage and being pushed away from you by 10 ft. on a failed save, or taking half as much damage and remaining where they are on a successful save. This may be used twice, regaining both uses at dawn.
'One with the Storm.' While outside in a thunderstorm, you gain advantage on Charisma (Persuasion) and Charisma (Intimidation) checks. Thunder cracks and lightning strikes boost the effectiveness of your speeches or your threats, but can just as easily provide a quiet moment for you at your command.