Corrosive Gauntlet

You form acid around your hands and forearm into the shape of a large gauntlet.

During the duration of this spell, your melee unarmed strikes deal 1d6 acid damage instead of their normal damage.

When a creature within 10 feet of you hits you with a melee attack, you can use your reaction to detonate the gauntlet, ending the spell. The attacker must make a Constitution saving throw. On a failed save, the creature takes 2d8 acid damage and the attack misses you, even if it already hit. On a successful save, the creature takes half as much damage and the attack hits as normal.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the unarmed melee damage increases by 1d6, and the detonation damage increases by 1d8.