Magus: Arcane Spellcasting

You study spells so you can combine them with your attacks or solve problems that strength of arms alone can't handle. You can cast arcane spells using the Cast a Spell activity, and you can supply material, somatic, and verbal components when casting spells. Because you're a magus, you can draw replacement sigils with the tip of your weapon or your free hand for spells requiring material components, replacing them with somatic components instead of needing a material component pouch.