Standings of Black Mage, Red Mage, and Summoner

[Kabooa]

That's Sylphie and you're in reference to the infusion of life through the use of the 3 white magics that THM and BLM have no access to. Sylphie and her mom (Who died from it) weren't using all 3 white magics with the exception of (Earth?) and were using their own essence to heal.

That's white magic which is about as polar opposite to THM and BLM as it gets.

Yes, because those skills don't fit in the 'holy trinity' shift 2.0 took. The fact is the foundation existed there in terms of it 'making sense' in relation to Thaumaturgy and by extension Black Mages.

If you want a bluntly contemporary model, then Drain.

At some point, the 'destructive' part of Drain turns into healing magic, which is again, 'altering life forces'.