Nice idea am unsure as to how it would work best though.
To my mind set it would be the other way around as less fire means more Oxygen therefore Air Quanta but I can see the way you ave done it works as well.
I also have diffculty with pay 2
get 1
and +1|-1 that could be a big sufferage really.
Just to clarify
1. Does it gain Quanta for each HP lost or for the loss itself?
2. What happens when it is Devoured/Mutated?
Ok so the way I thought of it in use is such (depending on answer to number 1, I am assuming per Life lost)
Play AIr/Fire Creature, cast Basilisk Blood x 2 and a Gravity Pull on it then you get 50 FIre Quanta in return. Thus an Air/Earth Duo could use Fire creatures as well.
Not too sure but a good idea with great possibilites.
Keep it up.
THanks
Scyther