Man, the more I think about this, the more I think a really cool opportunity could be missed here. If the the phoenix (not the ash) was Air instead of Fire, there would be some awesome combos. You could use Cremation, which is free, to sac the bird and generate the red quantum to revive it. Or you could use Elite Fireflys. The best combo of all would be with Unstable Gas... think about it!
Hmm, maybe that would be too powerful... I don't know, but the concept is awesome-- rising from the fire into the air and back. Any opinions on this?