Inferno Bracers - D&D5e

Wondrous Item, legendary (requires attunement)

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Crafted from the formidable scales of a red dragon, these bracers pulsate with intense, scorching energy, their essence infused by the very blood of the crimson beast. When you clench your fist, an inferno brews, eager to erupt. While attuned to these bracers, you gain resistance to fire damage and remain unaffected by their searing might.

By using a bonus action and speaking the bracers' command word, you ignite their latent power. For 1 minute, the bracers' scales blaze intensely, adding an extra 1d4 fire damage to your melee attacks and emitting a 20-foot radius aura of searing heat that instantly evaporates any exposed water within its reach.

For as long as they remain active, each time you successfully land a melee attack for the first time in a turn, the bracers gain a charge.

1st Charge. The bonus fire damage from your melee attacks increases to 1d6. Every creature within the heated aura must make a DC 17 Constitution saving throw at the beginning of each of their turns. On a failure, they take 2d4 fire damage and gain disadvantage on all ability checks and saving throws for as long as they remain within the area.

2nd Charge. The bonus fire damage from your melee attacks increases to 1d8. In addition to the initial effects, creatures failing the DC 17 Constitution saving throw also have their movement speed halved while within the heated aura.

3rd Charge. A third successful melee attack fully charges the bracers, enhancing the bonus fire damage to 2d6. Creatures that fail the DC 17 Constitution saving throw now also receive a disadvantage on attack rolls while inside the heated aura.

Overcharge. Landing a melee blow when the bracers are at full charge causes them to erupt in a furious blaze, dealing 8d6 fire damage to all creatures within the aura. A successful DC 17 Dexterity saving throw halves this damage.

After this fiery maelstrom, the aura dissipates, and the bracers revert to a dormant state.

Cooldown. If your turn ends without you successfully striking with a melee attack, the bracers lose a charge. Losing all 3 charges leads to the bracers powering down and reverting to a dormant state.