So I made it to level 50+ as a black mage. At 45 I had to rethink the entire hot bar setup. So for burgeoning black mages; “Sleep” is your crowd control; use it.
Second: read your dang passives. Stop using transpose in you element swaps, once you have Fire and Blizzard 3. You’re losing serious and sustainable dps.
Fire 3 and Blizzard 3 both give three dots automatically and swapping directly between the two will not drain mana. Additionally, Magic and mend 2; cuts the cast time in swapping to 1.5 seconds.