The core of the BLM rotation doesnt changed much after level 60. Spam Fire 4, keep eno up with timed Fire 1 casts, use ice phase to regen mana and reapply thunder dot. Thats still 90% of it. Adding a Foul/Xeno once per 30 seconds isnt a big change, and finishing a fire cycle with Despair is the last trick theyve added. But it comes at the same time as a trait that allows you to cast an ice spell for 0 mana while on full fire stacks, so after despair drains your mana you just go straight into the ice phase as normal. You do get a big change to the AoE rotation at 68. At that level you get an ability to use flare and still have mana left(if you have at least one umbral heart), meaning you can go back to back without a cooldown(like an ether or manafont). At the same time your basic ice AoE(which is now Freeze) gets an ability that grants it one heart per cast. Meaning that your aoe rotation can just be freeze thunder 4 flare flare freeze(add foul once per 30 seconds). The whole rotation ends up feeling very smooth once youve got a handle on it.