Not worried about combustion being dispelled, worried about my instant pyro / heating up procs being dispelled.
If you use combustion before deep freeze pyro spam combo it does no damage so I would never open with it unless i get a blessing from the rng gods and happen to crit at least 2 pyros in a row without a frozen target.
Against a level 70 target dummy with no resilience if i combust off of 1 pyro that doesn't crit it ticks for 5k. 8k if it crits. To put that in perspective, thats less than feral druid bleeds in cata. Aside from using it as a CC, combustion is useless without 2 crit pyros...which only happens in deep freeze.
This topic is about my procs, not my combustion. Stay on topic.
One of the things you can do to prevent Dispel on Heating up/Pyro is to put up other buffs to prevent that dispel. I use slow fall and ice barrier, which decreases the chance that Heating up will be dispelled.
A good combo with combustion to alleviate the dispel problem is the following:
Nova --> Critical Scorch ---> Heating up ---> Deep ---> Critical Inferno Blast ---> Instant Critical Pyroblast --> Critical Combustion ---> Critical Pyroblast.
If done correctly, you should put up big numbers with that combo, given that you've managed to make them use their trinket prior to deep freeze.
In 3s trying to nova a healer and cast scorch is too risky because If it gets dispeled / broken on damage / interrupted you cant do damage for another 25 seconds.
The only option is nova -> deep instantly with pyro and 1 heating up proc. When deeped instant pyrox2, inferno blast, instant pyro, combustion, dragons breath, blanket silence.
If you only have a pyro and no extra heating up you use nova -> deep -> alter time -> pyro -> inferno blast -> pyro -> alter time revert -> instant pyro -> combustion -> dragons breath -> blanket silence.
The big problem is I have to be in melee range as a caster to do my full potential so if I get procs then have to run to the healer / kill target and if they are across the map, that could take some time.
Another problem is if I do start my combo and lets say a Enh shaman is on me, he can effectively stop me in my tracks by spamming purge; This is assuming he didnt purge me before I started combo. Example: Pyro buff up, 1 heating up buff, nova -> deep -> instant pyro -> purge -> I now can not cast any other pyros -> I inferno blast + combustion (no global cooldown) -> get pyro buff -> I get purged before global cooldown is done on inferno blast -> I still can not cast a pyro. In the deep freeze I only achieved one pyro. That is 50k damage.
I am now completely worthless for 30 seconds.