The Ruby upgrade of the Strange Rune Bow, increasing heavily its damage and range, making it the hardest-hitting bow by far (as well as having the highest range). Only obtainable in the Hidden Mines of Al-Aziz by handling a Strange Rune Bow and a Qualis Gem. The bow is not used by any troop, so its up to the player for this bow to exist.
Note: in 3.8.4 and previous versions, accuracy is 88, shot speed 85 and Power Draw requirement 8.
(See Rune Weapons)