This massive rust-colored blade was once wielded as a symbol of dominance by the ruling overlord in Igrathad. You get +1 to attack and damage rolls made with this weapon. While attuned to this greatsword, you can use your bonus action to take a point of exhaustion to empower this blade for one minute, so that all attacks deal an additional 1d8 acid damage, and it critically hits on a roll of 19 or 20. Once you use this feature, it cannot be used again until the next dawn.
The Skingorger doesn't have a hilt, but is one large, solid, rust-colored blade with two handles on the back of it, so the wielder clutches two open handles on the back of one big, solid glaive.