BLM

[DrEubanks]

You can't use Thunder III

When actually do a boss and you can use your 44+ rotation properly, using Thunder III not only takes longer to cast, but it cost twice as much mana. Thunder is not your main DPS attack, Fire is. Using Thunder III means that if you follow the proper rotation, you will not have full mana once you Fire III and you will have lost cast of Fire by wasting it on the longer cast. Also Thundercloud is only a 5% proc, you're gaining 30 potency for double mana and double cast time, then 5% to get 100 extra potency. Once DPS meters come out you'll see why it's not worth it to cast Thunder III.

Thunder 3 lasts 6 seconds longer for one more second of cast time. Don't use Thunder 1.