Quantum=singular
Quanta=plural
The card looks interesting; I had a similar idea floating around in my head awhile back, only it was for a spell, not a permanent. I think the activation cost of this card should be higher, though, maybe 3
, so I voted 'overpowered'. I think the idea holds promise, so don't give up!
You might need to clarify a few things regarding how this card works. You mentioned that copying a fractal/miracle would drain all your air quanta. What about cards like fire bolt, siphon life, or ice bolt, that depend on how much of a certain type of quanta you have? Would those depend on that type, or would it check your air quanta instead?