Fire Gauntlet

The Fire Gauntlet is a Hardmode accessory that boosts melee weapons in the following ways:
 * They emit light particles during use
 * They cause the Hellfire /  On Fire! debuff (does not apply in PvP)
 * +100% knockback
 * +12% / +10% /  +9% damage
 * +12% / +10% attack speed
 * Some weapons may be autoswing (also applies to whips)
 * +10% size on some melee weapons

Tips

 * One may probably find it more useful to keep the Mechanical Glove, since, unlike many other combined accessories, the Fire Gauntlet loses some functionality of its constituent parts. The Glove gives 2% /  3% more damage and speed in its boost than the Fire Gauntlet, and the On Fire! damage from the Gauntlet is negligible.
 * The main benefit of the Fire Gauntlet is that it can be worn alongside the Mechanical Glove. Since speed and damage boosts act multiplicatively, this is a powerful melee combo. In fact, it increases melee damage more than combining the Mechanical Glove with the Destroyer Emblem.

History
Gantelet de feu