Lightsworn's not based on getting strong fields.
They are a deck that's going to use their recourses to deal with backrow and then go HAM with JD.The old lightsworn deck is dead,you won't see Lightsworn do any End Phase milling as you used to back in the day.It's a viable card yes,but it's going to give you bad draws,you can't afford that in Lightsworn.