When you achieve Revered status with the Avengers of Hyjal faction, you are able to purchase 5 new trinkets from Naresir Stormfury, the Quartermaster for that particular faction in the Molten Front. Only 2 of these trinkets seem geared for casters and while they may not seem to be the obvious upgrades that the trinkets directly from the Firelands instance are, they are still worth taking a look at and possibly even equipping.Lets take a look at how the Fiery Quintessence and the Rune of Zeth stack up against each other. Are they worth taking? Why or why not?The real difference between these two trinkets is not the amount of consistent stats that you get from them – the 383 Spirit from the Quintessence and the 383 Critical Strike from the Rune – but the amount of Intellect that you get from the on-use effect, the duration of the effect, and the cooldown of each trinket. These three factors are what set these trinkets apart from one another and will help you decide which one is right for you. The initial stats that they come with will play a part in this decision, but not nearly as much as the on-use effect will.Lets start off with exploring the proc a bit further.The Quintessence gives you 1149 Intellect for 25 seconds, with a 1 minute and 30 second cooldown. From looking at the logs for my groups collective boss kills in Firelands, the average boss fight lasts about 5 minutes. Using a formula that I picked up from the forums over at AskMrRobot, we will take a look at how much overall Intellect that proc will give you, if used properly.4 x 25 / 300 = 33%We will start by converting a 5 minute boss fight into seconds, which is 300 seconds. Assuming that you use the Quintessence on the pull, you will then be able to use it at the 90 second mark, the 180 second mark, and the 270 second mark. The fight will end at 300 seconds, meaning it will end before your next chance to use the trinket, which would be at the 360 second mark. Overall, you will be able to use the trinket 4 times. The buff that you receive from the Quintessence lasts 25 seconds. So, the formula goes like this:# of times the trinket is used x duration of the effect / duration of the fight, in seconds = percentage of overall Intellect gained over the course of an encounterThe on-use effect from the Quintessence gives you 1149 Intellect. 33% of this is 379 Intellect (rounded down). So, if you use the trinket when you are supposed to, you can expect to have an average 379 Intellect, overall on a 5 minute encounter. This gives you more Intellect than other trinkets with a flat amount of Intellect on them, like the Darkmoon Card: Tsunami or the Vibrant Alchemist Stone, and even comes close to giving you the same amount of Intellect as newer trinket, such as the Jaws of Defeat or the Eye of Blazing Power.Those calculations were for what is considered to be a short fight. Lets see how the Fiery Quintessence stacks up on a longer fight, like on Ragnaros. Our average attempts on Ragnaros lasted about 9 minutes, which converts to 540 seconds. I would use the trinket at the pull, then at the 90 second mark, the 180 second mark, the 270 second, the 360 second, and the 450 second. Because the fight would presumably end at the 540 second mark, I will assume that I wont pop the trinket at that point, because the fight will already be over and I should have to do too much healing at that point. So, I will be using the trinket 6 times on the Ragnaros encounter. The formula will now look like this:6 x 25 / 540 = 27%1149 x 27% = 310 IntellectOn a longer fight, the amount of overall Intellect was much less than most trinkets that you would otherwise have available to you, even ones from a tier behind the current one. So, for Ragnaros, I would probably use one of my other trinkets instead of this one. If Im healing a shorter encounter, like Alysrazor or Bethtilac, I would probably use the Fiery Quintessence, but not for longer encounters that could go well beyond 5 or 6 minutes or even up to 9 or 10 minutes.We have seen what the Fiery Quintessence can do and how much it can help you on shorter encounters, but what about the Rune of Zeth? Does the fact the Rune of Zeth gives you more Intellect make it more desirable than the Quintessence? Lets crunch those numbers and see! While the Rune of Zeth may give you 1277 Intellect, over the Quintessences 1149, the on-use effect only lasts for 15 seconds, instead of 25 seconds. The Rune also comes with a one minute cooldown, as opposed to the 90 second cooldown from the Quintessence. Because of these things, the formula is going to look a bit different. Assuming that we have the Rune of Zeth equipped, instead of the Fiery Quintessence, on a 5 minute fight, the formula will look like this:5 x 15 / 300 = 25%You would use the Rune immediately on the pull, then at the 60 second mark, the 120 second, the 180 second, and the 240 second mark. Again, the fight would end at the 300 second mark, and you would probably not need to pop the trinket and continue healing once the fight is over. You would get to use the Rune 5 times during this encounter. 5 times, multiplied by the 15 second duration of each effect, divided by the 300 second duration of the encounter gives you 25% of the on-use effect in Intellect, overall.1277 x 25% = 319 IntellectAs you can see, this is much less than what the Fiery Quintessence would give you, on a fight that lasts for the same amount of time. You were getting more Intellect with each use and you were able to use the trinket one more time, but the duration of the effect was 10 seconds shorter each time. This led to a lower uptime of the buff being active, which cut into your overall Intellect gained. Now, lets see how the Rune of Zeth works on a longer fight, like our 9 minute Ragnaros encounter.You would use the Rune of Zeth on the pull, then at the 60 second mark, the 120 second, the 180 second, the 240 second, the 300 second, the 360 second, the 420 second, and the 480 second mark. The fight would end at 540 seconds and the trinket should not need to be popped again. This means you would be able to use the Rune of Zeth 9 times on a 9 minute encounter. Your formula should look like this:9 x 15 / 540 = 25%Interesting. You still get 25% of the Intellect from the Rune of Zeths on-use effect during a 9 minute encounter, as you would during a 5 minute encounter. That would give you 319 Intellect, as opposed to the 310 Intellect you would get from the Fiery Quintessence on the same fight. While both are still well below what other trinkets can give you, the Rune of Zeth would give you more in this situation.What I choose to take away from this is that in terms of raw Spell Power, the Fiery Quintessence appears to be better, but only for fights with a short duration. Longer fights will not give you the overall Intellect that other trinkets would and would result in a loss of Spell Power. If youre looking at either of these two trinkets for regen purposes, its safe to say that discipline priests will probably want the Rune of Zeth (as the slightly larger amount of Intellect on there will help them with Rapture, which is based on your total amount of mana at the time) and holy priests would want to stick with the Fiery Quintessence (as we get more from raw Spirit, due to Holy Concentration).While there are certainly better trinkets in Firelands, itself and even in the up coming Dragon Soul raid, it never hurts to keep your options open and to swap out trinkets, as needed between fights. Until I can get my hands on better, I have no problem equipping a Fiery Quintessence and seeing what kind of results I can produce. Hopefully, Ive given you all something to think about and maybe you will even consider trying one of these wonderful trinkets out, the next time you swing by the Avengers of Hyjal Quartermaster.A huge thank you to the folks over at AskMrRobot, for the fantastic information and formulas that were given on the thread that I linked above. Feel free to give their site a try sometime an
d see how your gear and build look, according to their calculations. You just might be surprised at what you find there. I know I was!