Sorcerous Empowerment

Once per long rest, you may harness your magic to empower a weapon you're holding with sorcerous energy. You expend 2 sorcery points, and (you and only you) can use your charisma modifier instead of strength or dexterity when using the weapon,  and it counts as magical for the purpose of overcoming immunities. If the weapon wasn't already a magic weapon, you may expend another 2 sorcery points to give it a +1 to damage and attack rolls.

These benefits last until you finish a long rest.