Ultimate Weaponry are Key Items in Xenoblade Chronicles 2. They add 5000 WP to a weapon class of a Driver. They can be received as rewards for completing a Rare or Legendary Blade's Affinity Chart, in the Land of Challenge from White Chests obtained after completing a Challenge Battle, and from the Mor Ardain Traveling Bard by trading 400,000 Bonus EXP.
Using[]
Ultimate Weaponry can be used on the Enhance Arts menu by selecting a weapon class then pressing X on the controller.