Math question for fire

With the new Venthyr changes to mirror we should theoretically be getting off 10-11 pyros. At what point does Mastery become worth stacking again? Our DPS during combust should increase by around 40% and even outside of combust…

Do we have to wait for the double legendary with fevered and Sun King to make mastery stacking a thing again?

Mastery is already a pretty strong single target only stat, just outshined by the fact that crit also becomes a decent stat for us with the current legendary so we want a more even mix. And it might be hard to find answers to these questions because there aren’t many venthyr fire mages.

The maximum number of pyros during combustion is determined by the number of Fire Blasts available during the window and the global cooldown (GCD). The minimum GCD is 1 seconds, so the maximum number of pyros is 12, casting 1 pyro each second.

The bigger problem is with Fire Blasts. You can shave the cooldown of fire blast to 8 seconds at around 825-830 haste with Flame On. This is my hypothesized target haste to reach for Venthyr Fire Mages. During timewarp, this reduces down to 6.1 seconds. That 0.1 seconds actually pretty significant.

Within 12 seconds, the amount of time for fire blast to reduce its cooldown is what is important. At an 8 second cooldown for Fire blast, only 1 charge will naturally become available during combustion. That 0.1 seconds from earlier means we can’t have 2 fire blasts recharged during combustion with timewarp without investing much more into haste. This means Temporal Warp will only affect the GCD for the number of pyros that can be used.

With mirror’s of torment, we get at most an additional 12 seconds of fire blast cooldown during combustion. So for the 12 second combustion window, that’s a total of 24 seconds to recharge fire blast. 24/8 = 3. (Note: If we ever shave fire blast down to 6 seconds, this becomes 24/6 = 4). If we begin with 3 charges, that’s 6 fire blasts total for the combustion window for Venthyr fire mages.

We also have scorch and Phoenix Flames to fill. Ideally using Pheonix Flames over scorch for spreading ignite. The major issue with Phoenix flames is the slow travel time and it being on the GCD. Meaning that for each Phoenix Flames, it’s essentially a 1.25-1.5 second loss during combustion. Each pyroblast is also a 1.25 second loss at 25% haste.

With all this information, I use this to generate one possible rotation which I previously posted:

See how the math works out? We can cast 8 pyroblasts using a double fire blast start.

Unfortunately, without time warp or more haste, we cannot cast 9 pyroblasts, even when assuming 1.25 seconds for Phoenix Flames.

0.00 MoT->Fire Blast (2, 0)
0.00 Fireball -> combustion -> Fire Blast (1, 6)
0.00 Pyroblast
1.25 Pyroblast -> Fire Blast (0, 7.25)
2.50 Pyroblast
3.75 Phoenix Flames
5.00 Pyroblast -> Fire Blast (0, 11)
6.25 Pyroblast 
7.50 Phoenix Flames
8.75 Pyroblast -> Fire Blast (0, 20.75)
10.0 Pyroblast
11.25 Phoenix Flames
----------------------------------- Need more haste for GCD
12.0 Pyroblast -> Fireblast (0, 24)
13.25 Pyroblast

However, with time warp, the above should work out. It may be the case that the former rotation is used without time warp and the latter is used with time warp.

Note: 10 pyroblasts is not feasible unless the cooldown for Fire Blast is at 6 seconds.

I refer to what I posted before about how to use sun king’s blessing depending on when that last hot streak consumption occurs: Sun King's Blessing Buff is hype - #5 by Arcsyth-lightbringer

Mirrors of torment’s last tick is going to be helpful. I’d also like to add, actively removing sun king’s blessing stacks will probably be necessary to use this legendary correctly. Fire blast pooling is very necessary for it to be effective.

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To answer the mastery question: Probably after hitting 825 haste. When I ran simulations during beta, I found that having mastery == versatility was the best performing stat ratio for single target with minimum critical strike.

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Yes but why wouldn’t you fireball fireblast to start combust? Why would you waste that fireblast cool down? Also … why not wait til you have a hot streak in order to max out your available fireblast charges? Also the cool down is going to be four seconds so shouldn’t that give you twelve pyros instead of 8?

As to the second person… so you’re saying even after 25% haste, versatility is still a more viable stat because of the dmg reduction?

Thanks in advance.

Infernal cascade. The double fireblast opener gives you the 25% fire damage bonus up front. The second rotation using fireball to start is slower in getting infernal cascade stacks without much benefit for getting that extra pyroblast in without temporal warp.

That’s a fair point. My analysis is more for my playstyle where I want to start with combustion and not have to wait for the first hot streak proc. It’s especially true with low critical strike.

I only tested for single target, but I found that having the same amount of both mastery and versatility (for the increased damage) simmed the best.

Ok that makes sense… so if my vers and mastery are both around 10 with haste over 23 that’s ideal. Gotcha. Thank you.

Also I generally go for the hot streak consumption on combust. I’ve had the best results plus I find it easier to manage.