Step 1: Implement metamagic incorrectly, allowing two spells per turn.
Step 2: Release an interview where you jokingly complain about how Sorcerers "break the game with metamagic" because they can use two spells per turn.
Larian's gameplay designers, ladies and gentlemen.
Just like wizards being able to learn more from scrolls than they can on tt sometimes the rule of fun wins out
