The storm blade is a magic longsword for Dungeons & Dragons. It channels the power of thunder of lightning, growing in strength with its wielder.
Storm Blade
Weapon (longsword), rare [Tier 2]
(requires attunement)
Damage: 1d8+1 slashing
Weight: 3 lbs.
Properties: Versatile (1d10+1 slashing)
A sword that channels the elements is bestowed upon holy warriors who fight for the storm god Tempest.
While attuned to the sword, you have resistance to lightning damage. You also have a +1 bonus to attack and damage rolls made with this magic weapon.
Very Rare [Tier 3] upgrade
When you achieve level 10 while attuned to the sword, you have a +2 bonus to attack and damage rolls made with this magic weapon. You have advantage on the attack roll if the target is wearing armor made of metal. On a hit, the target takes an additional 1d8 lightning damage, and it can’t take reactions until the start of its next turn.
Spellcasting. The sword has 6 charges. It regains 1d4+2 expended charge daily at dawn. Spells cast from the sword have a save DC of 12, unless your spell DC is higher. While holding the sword, you can use an action to expend 1 or more of its charges to cast one of the following spells:
- Thunderwave (1 charge)
- Lightning Bolt (3 chargesl)
- Chain Lightning (6 charges)
Legendary [Tier 4] upgrade
When you achieve level 17 while attuned to the dagger, you have immunity to lightning damage. You also have a +3 bonus to attack and damage rolls made with this magic weapon. You have advantage on the attack roll if the target is wearing armor made of metal. On a hit, the target takes an additional 1d8+3 lightning damage, and it can’t take reactions until the start of its next turn.
Improved Spellcasting. The sword has 10 charges. It regains 2d4+2 expended charge daily at dawn. Spells cast from the sword have a save DC of 17, unless your spell DC is higher.
Wrath of Tempest. While holding the sword, you can use an action to cast Storm of Vengeance. After the spell has been cast, roll a d6 at the start of each day. If you roll a 6, this feature is recharged.
Power Tiers
To help Game Masters determine which player character levels a magic item is appropriate for, each item is assigned a power tier.
Tier 1: Levels 1 – 4
Common and Uncommon items for characters still learning their abilities.
Tier 2: Levels 5 – 10
Uncommon and Rare items for characters who are seasoned adventurers.
Tier 3: Levels 11 – 16
Very Rare items for characters who are established masters of their class.
Tier 4: Levels 17 +
Legendary items for characters who are like superheroes or demigods.
An item’s power tier is only a suggestion, and the GM should consider how each item would best fit with their campaign and player characters.
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