There are 2 ways of handling your combustion CD.
- The reactionary method. This method entails getting some addon like: CombustionHelper, MyBigIgnite and letting the addon tell you when to hit combustion. I believe this is the suboptimal.
- The proactive. This method entails working your CD's and setting yourself up to have a big ignite on demand. In this section I will elaborate on this method.
First off: the keys to the proactive method are Presence of Mind and Alter Time. The main thing that most mages seem to not understand is: You do not have to wait the full 6 seconds for Alter Time to reset you.
I use the simple macro:
/cast Presence of Mind
/cast Alter Time
Scenario 1: Alter Time and PoM
- Fireball until you get a crit.
- Inferno Blast queue that crit into a Pyroblast Buff.
- Make sure Pyromaniac debuff (via mage bomb) is up.
- Pop all trinkets/Synapse Spring buffs
- Hit the Macro, then hit pyro - At this point it will fire 1 pyroblast (using up the buff), you will have a PoM buff, and 6 seconds till Alter Time ends.
- Hit Pyroblast again - this will use up the PoM buff (sending out pyroblast 2)
- Hit the Macro - This will preemptively end your Alter Time countdown and reset you to: Pyroblast buff and PoM buff
- Hit Pyroblast for insta pyroblast 3 (consuming the pyro buff for the 2nd time).
- Hit Pyroblast for insta pyroblast 4 (consuming PoM buff for the 2nd time).
- Hit Combust
Scenario 2: PoM
- Fireball until you get a crit.
- Inferno blast queue that crit into a Pyroblast Buff.
- Make sure Pyromaniac debuff (via mage bomb) is up.
- Pop all trinkets/Synapse Spring buffs
- Hardcast another Fireball
- Queue Insta Pyroblast via Pyroblast Buff.
- Hit the Macro, then quickly hit Pyroblast (using a PoM Pyro)
- Hit Combust
Glyphed Combustion is a 1:30 CD that exactly matches PoM. Alter Time of course is 3:00 CD. Thus you cycle between Scenario 1 and Scenario 2.