The Enhanced Night's Edge is a Hardmode Sword. It looks like the Cursed Expulsor from Ulterraria.
Crafting[]
1 Night's Edge
20 Cursed Flames
12 Mythril/Orichalcum Bars
Crafted at:[]
Mythril/Orichalcum Anvil
Stats:[]
67 Melee Damage
Average Knockback
5% Critical Chance
Fast Speed
Inflicts 'Cursed Inferno'
Tooltip: "Forged from pure evil"