Similar to Aura mods, Stances can be slotted into a special Stance slot on melee weapons, and they increase a weapon's mod capacity. Stance mods of matching polarity with their slot will double their mod capacity bonus, while non-matching polarities will have reduced capacity bonus. Leveling up Stance mods increases the amount of additional mod capacity they provide, as well as unlocks additional Melee Combos for use.