At your level, I believe Fire II is better on pack of three or more mobs as it's 100 potency on 3 mobs (effectively 300 potency) compared to 150 potency from Fire I. It would have been 2 mobs or more (200 vs 150 potency) if the mana cost was the same but Fire II cost more than Fire iirc in the ball park of a bit more than 4/3 the mana cost. DPS doesn't matter at the level you're at so idk why this guy vote kicked you. Not like you can't finish Brayflox just doing single target. At 34, which is the level Brayflox sync you to, you should start with Fire III then proceed to Fire IIs on packs of mobs but like I said, it doesn't really matter since the rotation changes up at 50 anyway.