seems OP to me. 2 quanta per turn is OP compared to towers, then the crumble ability gives 6 quanta for free? That would be like an imolation without a cost!
Assuming that the quanta production is random (not matching mark) except when crumble is used, 2 quanta per turn is not OP. If this thing produces random quanta, it should be compared to quantum towers, not regular towers.
Quantum towers and pillars alike provide 3 quanta per turn, so there is really no issue.
Also, don't forget that Immolate doesn't produce just 6
. It also produces 1 of each type (like nova) so in the end, you get 17 quanta from immolate, not 6.
I would say this card is actually slightly UP not OP...
Although I do think that the upgraded version should either have a skill cost of 1 or the unupgraded cost should be lowered to 0 as well.