I have a 30 Fire mage. I also have a bro who plays a fearel druid. we team up to do red quests and stuff like that. while im casting pyro my bro can dps and when it hits i freeze him and he continues. the only thing i have to worry about on my mage is to not do to much damage. Also my fire blast dose the same ifnot more than my fire ball and recharges fast enough to kill.

my combo    pyro/fireblast/fireball