There has always been a lot of mystery as to what exactly this trait does. Bronto has written a wonderful description of his experimentation with this trait that was originally posted on Allakhazam.com:

I was very fortunate to receive this just last weekend. When I returned from Dynamis, I went to immediately do some experimentation. For the testing, I went into Rolanberry Fields using the bats, bees, goblins, weapons, and morbols as my guinea pigs. I also made sure to unequip my weapon, and let my wyvern do all the tanking/attacking. I experimented with Warrior, White Mage, Samurai, and Monk support jobs.

First of all, support job "abilities" are not granted. Nothing was added to pet commands. Your wyvern isn't going to provoke a monster off of you, or steal a pretty little coin. It also won't divine seal it's healing breath. The description of the armor is poor - abilities and traits are extremely different.

/WAR: It took a while to notice anything. When I first equipped the Wyrm Mail, my wyvern was doing 4 damage than normal. I assumed attack bonus was affecting him. However, I also recently attained level 75, so I was not sure if the armor or level was affecting his hitting. I did some equipping/unequipping, to sort of "reset" the support job trait granted to your wyvern. After some time, he finally double-attacked.

/WHM: Thinking the equipping/unequipping factor may "change" the random trait granted, I equipped the Drachen Brais for +10% Wyvern HP, and waited. After equipping the Wyrm Mail at three different times, Auto-Regen had been granted to my wyvern every time. This made me wonder if a certain sub granted a constant trait.

/SAM: Was easy enough to check. Checking wyvern TP after each hit, he was gaining 9% per hit at times. Store TP had been granted.

/MNK: Sounds peculiar, but this was the most important, and somewhat disappointing fact-revealer. For this, I equipped the Wyrm Mail -after- I summoned my wyvern, to see if Max HP Bonus would kick in, much like +10% Wyvern HP kicks in when you equip the Drachen Brais after your wyvern is already out. No dice - no Max HP increase. Right there it told me that you wyvern does not receive -all- support job traits - little bit of a downer, but any single trait to your wyvern is still pretty cool and fun. I fought a -lot- of targets, and my wyvern simply did not counter. I assumed Subtle-Blow kicked in.

I apologize for the length of my post. It seemed that there was still a lot of mystery behind the Wyrm Mail, so I decided to share my findings. I'm still having some fun testing some sub jobs, like /BST for some random killer effects and /RDM for the next-to-nowhere possibility that Fast Cast might make my wyvern execute healing breath with less "casting time". I'll just have to keep playing around.

Based on the info I've gathered thus far, it seems your wyvern does in fact receive ONE(1) -random- support job -trait-, and it seems to change-up when you re-equip the Wyrm Mail.

The abilities and appearance of the Wyrm Mail are quite rewarding. Good luck to all who search for it.

Galka -75DRG- WAR37, SAM37, WHM37, BLM51, RDM56

I've had the Wyrm Mail for a few weeks now, and experimentation I've done has made me suspect that ALL support job traits are added to your wyvern, but only if you're wearing the mail when you use the "Call Wyvern" ability.

/MNK - Wyvern HP is increased. I think in the above information, because Bronto had equipped the armour after calling his wyvern, he didn't get the effect. I've not noticed any Counter effects, but I rarely get Counter when I'm MNK main so it could just be me.

/RDM - Unfortunately, your wyvern will not get Fast Cast. Healing Breath is a job ability not a spell, so is unaffected.

/WAR - Double Attack on your wyvern is one of the greatest things you get from this bit of gear. Increases your damage by a load, and it seems to trigger about as often as it does for me as DRG/WAR. Attack Bonus adds to this too.

/SAM - This is probably the easiest one to prove, using <pettp> it's obvious that the wyvern has Store TP, and Zanshin means he strikes again when he miss a lot. So my wyvern definitely gets at least two job traits from the Wyrm Mail.

Another note, you don't need to wear the armour the whole time to get the effects - just have it on when you Call Wyvern. After that, you can switch back to your normal gear.

I've recently come to realise that your wyvern loses the support job traits if you zone. So if you plan on fighting with these effects, make sure you equip Wyrm Mail and Call Wyvern every time you change area.

I realise a lot of what I've written is available elsewhere, but not on here - I can confirm that these points are true though, and if you're on Phoenix, I'll show you.

Gorp {Phoenix}

a side note, for the red mage & Black Mage support jobs they do get job traits, 1st they receive Resist Petrify (tested with petro eyes) for RDM sub and Magic Defense bonus. for blm sub one can only assume it receives magic attack bonus... but your pet doesn't do elemental breaths when subbing blm.

How can you test resist petrify? You can't know how long it would have lasted in the first place. Kylep2 08:19, 13 November 2008 (UTC)
Getting the "Resist!" message would mean Resist Petrify kicked in. Also, shouldn't all of this be on the talk page? Dogtato 09:42, 26 December 2008 (UTC)
I'm pretty sure you can resist any spell with a very small chance. The chance increasing when you're a much higher level than the mob obviously. However, I could be totally wrong, I have several 75 jobs and can't really recall all the instances I've resisted seemingly for no other reason than just that there's always a small chance.Dwolfwood 23:49, 9 January 2009 (UTC)
Of course you can resist everything with a small chance. But the "Resist! So-and-so resists the effects of the spell!" means the job trait is kicking in rather than just the random number generator resist/evade of the spell/ability. --Aethaeryn 02:51, 17 January 2009 (UTC)

Moved from main page. --Ahkvan 00:11, 10 January 2009 (UTC)

Magic attack bonus from /blm should also effect healing breath... use deep breathing and wait a few minutes. "Pets magic attack bonus effect wears off". Sanjuro asura 09:41, 8 May 2009 (UTC)

That could simply be due to the "double strength of elemental breath" aspect of Deep Breathing, however. At the least, Magic Attack Bonus most certainly does not affect cure potency for players, either by spell or ability. --Taeria Saethori 10:00, 8 May 2009 (UTC)

/BST gives Bird,Vermin, and Amorph killer to Wyvern, tested it out in Rolanberry and Qufim Sanjuro asura 09:59, 8 May 2009 (UTC)

/PLD gives Undead killer and resist sleep, probably gives defense bonus and auto refresh as well, but my Wyvern didnt seem to get mp from pld sj :P as a ghost aspired her for 0 mp, after casting a few spells Sanjuro asura 10:22, 8 May 2009 (UTC)

/DRK gives atleast Arcana killer, I think its safe to assume, if your sj grants a killer effect, the wyvern gets it too :P Sanjuro asura 10:29, 8 May 2009 (UTC)

/MNK does give counter! but at a terrible rate lol as Tranchevent countered a goblin robber in the desert Sanjuro asura 10:38, 8 May 2009 (UTC)

It would seem, you get more then 1 job trait to your wyvern, doesn't seem random to me at all, I'd wager they get all applicable traits from your sj. Sanjuro asura 12:49, 8 May 2009 (UTC)

Has anyone tested these armor pieces with zoning? Considering a wyvern will loss traits upon changing zones; perhaps equiping mail prior to the zone would retain traits? There are many situations where i would prefer Call Wyvern to be ready @ 0:00 opposed to granting additional traits to the wyvern and not having access to a spare one. --Diraphe 03:27, September 8, 2009 (UTC)

BLU traits?

Has anyone with this piece of armor tested whether BLU traits granted by spell manipulation carry over to the wyvern? It seems iffy to me since they aren't innate like a WAR's Double Attack or the SAM's Zanshin, but granted through an outside means.

I do not have have the Wyrm Mail or a high enough DRG level to test it myself, but I am curious as to whether set BLU traits would carry over when activated while using Wyrm Mail-Call Wyvern, whether changing them will carry over naturally or whether you'd need to re-Call Wyvern, and whether one could change their traits, keep Wyrm Mail on, and zone to change them (or whether you could set spells devoted to gaining as many traits as possible, then switching to a more useful spellset). At /37BLU, the only traits I could see being really useful are Beast/Lizard/Undead Killer, Auto Regen, and Resist Sleep, none of which are as impressive as something like Double Attack, but it's still something to think about.

--Almost Unsane 07:43, November 3, 2009 (UTC)

So far I've been able to confirm that wyverns can NOT receive Auto Regen from /BLU. I'm currently testing killer effects, and as of right now Beast Killer doesn't seem to be a transferable trait either. -Prothescar 19:35, December 30, 2009 (UTC)

/BLU with auto Regen set definitely does not pass to wyvern. --Goriru 05:08, March 26, 2010 (UTC)

It looks like all job traits from setting blu spells do NOT transfer to wyvern. Just got mine and test. Set auto regen, beast, plantoid, undead and lizard killer. None seems to have gone off. --Sleepingkirby 02:41, November 14, 2011 (UTC)