Gladius of Carcosa
From Arkham Horror Wiki
Card info
Type: Magical weapon
Bonus:
- +4 to Combat checks
- +5 instead if your other hand is empty
Hands: 1
Price: $7
Mythos Source
The fictional city of Carcosa first appeared in Ambrose Bierce's short story An Inhabitant of Carcosa (1891) and was later used by Robert W. Chambers for his anthology The King in Yellow (1895). Not much is known of Carcosa - it is probably located on another planet, if not in another universe.