Confused with Quicken Spell. The PHB makes me think that the bonus action spell can only be a cantrip, quicken spell changes this? Ex:Cast Scorching Ray as normal, then uses SP to cast again as a bonus action? Or EX: Scorching Ray but SP could only cast a cantrip? RAW, you could not cast Scorching Ray twice in the same round. You could use your Action to cast a Cantrip (like Firebolt), then Quicken Spell to cast Scorching Ray as a bonus action.

— Matthew Mercer (@matthewmercer) 21 aprile 2018