Black Mage Sanctuary - A Guide to DPS

[Aloise]

Very generally, you want to be using F4 as much as possible. From a cold start, this is how I do it:
(Sharp) F1 > (Eno) F3 proc > F4x2 > F1 > F4x2 > F3 proc if you have it > B3 > T1/2 (I believe 1 is usually better) > B4 > F3 > back to F4x2 > F1 > F4x2, etc etc. After your second B4, finish the third rotation, let Enochian fall off, and re-apply it after the F3 and you're full on MP. You could hardcast F3 at the very start and save Sharp for a guaranteed proc, but I really don't like hardcasting F3.
Now, because Enochian's duration changes as you refresh, your rotation changes after each refresh. It's a better idea to have Enochian as your timer. Rule of thumb is if there are 9 seconds or so left on the timer, you have time to B3 > T1 > B4. If there are six seconds or so, you have to drop the T1 before B4.

Both Thundercloud procs AND Firestarter procs are more PPS than F4 is, but you need to be smart about it. T3proc is only a gain if your previous Thunder DoT has 12 seconds or fewer on it. So if you use a T3proc and immediately get another, you should not use it, unless the timer will fall below 12s before you lose the proc. F3s I generally hold on to for if I need to move, or add at the very end otherwise. If it's not the initial 30s rotation, using any proc essentially eats a F4 cast and you should cut one from your rotation somewhere. Similarly, movement often means you'll have to cut a F4 cast. You'll get a feel for when you don't have to cut it, but better safe than sorry until then.

I generally hold Sharpcast to use it with Enochian (From UI3: (Sharp) F3 > (Eno) F4 > F1 > F4x3 > Guaranteed F3proc), as it lets me pad out my 30s rotation more. That's probably not the correct thing to do, so other people please correct me. That's just the basic rotation, I'm assuming you know to pair Ley with RS + Convert and all that jazz.

In regards to T1 vs T2, my understanding is that time spent casting T2 lengthens the time it takes until you can get back to casting F4, but it's sometimes necessary to ensure you get both MP ticks. Since you're just fishing for procs and can apply it pretty much every time you go into UI, T1 is the way to go.