One thing to keep i mind, when trying to fish for a good ignite. When you do the Alter Time/PoM macro, be aware that they might not even crit, you WANT them to crit, the goal is to get two in a row to get an extra at the end, and just hope they crit. All you can really do is be patient, set your threshold on Combust helper a little higher, and just wait for that sweet moment. If you get a good crit and your ignite is pushing 40k, don't chance another and make it weaker, go ahead and use it up, there will be more. GL
---------- Post added 2012-11-19 at 05:24 PM ----------
@OP: Unless you get a very lucky string of Pyros and get 3-5 on each side of an Alter Time, you won't see 30+ too often. I once got 71k though when I got EVERY SINGLE Pyroblast crit (Roughly 9-12 crits)
Also, if you have PoM, you shouldn't ever Combust w/o it because both cooldowns are 1.5m (90s) (You ARE using the glyph, right?). While this will change once you get your 4P T14, if I use PoM on a fight, I still plan to use PoM with every Combust.
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It doesn't make sense to do all those Pyros as i told before. Just be aware of crits.
Best thing to start a combustion is:
Wait for HU -> IB
Cast FB for the next HU so that you have HU/HS together.
Cast another FB an directly follow it up with the HS.
Usually here the chance for a crit is very high due to HU is up an FB/HS hitting together.
After that Crit do 2 (max.3) more Pyros and Combust.
I usually combust BEFORE using the AT IF my first pyro crits and my Combustions at the Start are 60k-100k crits nearly everytime.
RULE OF THUMB:
1. Raise the Chance for Pyrocrit by having HU AND HS and by hitting with FB AND HS at the same time.
2. After the first Pyrocrit do 2 (max.3) more and Combust. It doesnt matter if there are Instant Pyros left from PoM/AT.