Seems fine. Thumbs up, except for one thing: When the upgraded card comes into play, it would only take 5 quanta to begin a whole massacre.
Example: with the
![Air :air](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/air18x18.png)
card, 4 quanta per 6 cards: later in the game, you might potentially start destroying a
![Fire :fire](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/fire18x18.png)
deck, with a whole bunch of airborne creatures to ignore certain shields.
Example:
![Earth :earth](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/earth18x18.png)
, a mono-earth deck could have 2 or 3 of these out within 5 turns, and each one of those would either drastically reduce the opponent's quanta production, or make your creatures exceptionally resistant to creature control.
Continues. You get my point, right?