Gauntlet of the Duel (5e Equipment)
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Wondrous Item, rare (requires attunement by a lawful creature)
When cast down, this enchanted gauntlet can magnify even the tiniest scrap of pride or conceit into a surge of righteous self-belief. Even goblins have been known to join the bearer in honourable combat (with predictable results).
You can use this gauntlet to cast the compelled duel spell (found on page 224 of the Player's Handbook). The save DC for this spell is equal to 8 + your proficiency bonus + your Charisma modifier.
This spell does not require concentration, and lasts until you or the targeted creature falls to 0 hit points, until the next dawn, or until a circumstance is met that ends the spell early.
Once the gauntlet has been used this way, it cannot be used this way again until the next dawn.