Arad walked out of Arthur's office, following one of the maids to his room. "Please wait a moment." Mary rushed after him, "Are you sure this is all we need to do?"
Arad looked back at her, "Yes." Yog had already confirmed that Arthur's problem is solved, what remains now is up to him and how he'll spend the rest of his days. It's not like his sons are suffering, they are doing fine and just having their father's names opened a lot of opportunities for them.
What Yog wanted was for Arad to make sure Arthur would make himself more apparent in each of his children's lives, and do his best to support them in any way possible directly. That would make sure that none of them would feel left out and potentially become a problem after Arthur's death.
What Arad is now interested in is checking the strange cast he has achieved. Besides the properties of the spell itself, the casting method of magic has three variables. Speed, accuracy, and power.
Controlling temperature is fine and dandy, but what about thermodynamics? Yeah, Arad only scratched the surface.