When I use Charizard's power to make all energy on it Fire, does Double
Colorless become "2 fire energies" or just a "fire energy" ??
Thanks
-Joe

Interesting question.  The answer is kinda both.  You see, Energy Burn will turn those 2 colorless energies into 2 Fire Energies needed to pay Charizard's cost.  But, when it comes time to discard, it only counts as one energy card, where you are required to discard 2.  Hope this helps clear things up!

Scott