Reveals the location of the Boss room on the map at all times.
In-game Footage
Trivia
Sol is a Latin name for the Sun.
The item's pickup quote may be a reference to DotA 2, where one of the two-player teams is called the Radiant, and "Radiant victory" is the quote heard by said team upon winning the match.
Bugs
Sol's effect may not occur after the Great Gideon fight.