Great Arcane Staff is the 94th most-used weapon under the current filters (0.2% of 554,152 recorded fights), winning 19.8% overall - 20.2% of its wins come against better-geared opponents.
Winrate by IP difference (50-IP buckets, dot size = sample size). A flat curve means the weapon carries regardless of gear; a steep one means it only wins when out-gearing.
