Arts Heal (XC1)

Arts Heal is a gem effect in Xenoblade Chronicles. It heals the user every time a Battle Art deals damage.

Overview
Arts Heal doesn't do anything for arts that don't directly hit an enemy (damaging debuffs do not count), so they're best-placed on characters with mostly offensive arts that use them frequently. Having multi-hit arts is even better, since the gem will trigger for each hit.