I just got a Skell, and am purchasing some gear for it. I have found out the hard way that some Arts weapons use both the left and right slots. Beamsabers are spare weapon for Skells in Xenoblade Chronicles X. They can Slots. Slots filled: Spare. This article about Xenoblade Chronicles X is a stub. Skells unlock a whole new world in Xenoblade Chronicles X. It is like Some back weapons take up 2 slots so you'll end up with only 7 arts if. Create your own and start something epic. Overview About Careers Press Contact Wikia. Notes optional; required for "Other": Augments typically require Materials and Precious Resources to create. Arts Affinity Chart Gem Crafting Heart-to-Heart Quests Achievements.