History of Legion's Bulwark

Legion's Bulwark is the Heir Apparent Catalyst perk for the Heir Apparent Machine Gun: it increases the Arc Shield's durability and partially reloads the magazine if the shield is destroyed. Destiny Game Wiki gives 75% extra damage reduction on the shield (25% in PvP) and a 50% magazine refill on shield break. Unlocked via Competitive Catalyst during Guardian Games.