Forgath nodded. "Indeed; though I have plentiful mana to begin with, I use other sources when I can.  As you guessed, the local mana is not eager to produce flame.  My armor is heavily enchanted, and that includes enchantments that can gradually build stores of unformed mana for me to use from that around me or directed at me.  And of course, I have my bound source."  He raps his chestplate with gauntleted knuckles.