Armiger

Armiger Arsenal is Noctis's special ability in Final Fantasy XV. After obtaining it, it can be invoked by pressing +  /  +  when Noctis has full MP while in battle. It summons crystal energy in the form of swords to surround Noctis to greatly enhance his battle capabilities, making him faster and stronger and able to continuously use special abilities. The state drains his MP and ends when he runs out.