Arcane Armor: Thunder Gauntlets

Stand-in for the Armorer Artificer's Arcane Armor weapons. The base for this weapon had to be a flail for the d8 damage die. Artificers don't have flail proficiency so I added it only for this weapon and applies only when equipped. Currently dndbeyond does not allow homebrew items to be targets for Artificer infusion so if you apply Enhanced Weapon just customize the damage and to hit bonuses.

Thunder Gauntlets. Each of the armor’s gauntlets counts as a simple melee weapon while you aren’t holding anything in it, and it deals 1d8 thunder damage on a hit. A creature hit by the gauntlet has disadvantage on attack rolls against targets other than you until the start of your next turn, as the armor magically emits a distracting pulse when the creature attacks someone else.

Proficiency with a Flail allows you to add your proficiency bonus to the attack roll for any attack you make with it.

Notes: Replace Damage Type: Thunder, Bonus: Proficiency, Bonus: Magic Item Attack With Intelligence, Proficiency: Flail, Damage, Debuff, Combat, Artificer, Sap