Weapon Power

Weapon Power is a gem effect in Xenoblade Chronicles. It makes it more likely for the user's weapon gems to trigger. The effect is additive; a gem with 15% activation rate will be raised to 25% by a Weapon Power gem of 10%.

Overview
Being restricted to weapons itself, Weapon Power is difficult to find a place for. The player must really be focusing on the strategy that the gems they wish to boost enables, to be worth giving up the slot that a different boost could be using.

Weapon Power affects any gem that's on a weapon and has an activation rate: