So, anyone discovered the proc chance or PPM for spells?

Proc chance seems to be very very high for spells... 50% per cast or more. The 20-second ICD quoted earlier seems to be about right for spells as well. Melee procrates appear to be lower, but we haven't tested much yet.

Just did a Kara run, and it certainly appeared to be stacking WITH Thunderfury but I don't have any logs or what not to prove whether it does or doesn't. I just know the bosses attacks were very slow.

Bleh if the internal cooldown is true for spells then this sucks for casters...

Tested this out today.

For spells we got around a 25 second internal cd, with a very high 50%+ proc rate as others have said.

For melee:

Mage: 117 procs of 1001 hits (11.69%) using a 1.8 speed. (26% proc crit rate)
Elem Shaman: 80 procs of 500 hits (16%) using 2.7 speed (27% proc crit rate)

The melee and spell procs are not linked, as instant cast spells between melee swings proc'd back to back with the melee proc.

Edit add: Also can proc off things like windfury.

It does not stack with tongues or tclap.

It is not effected by mage talent Ice Shards, but % dmg modifiers such as soul link and CSD metagem effect it. Spell/frost damage increasing debuffs effect it, but wasn't able to test all such as Winter's Chill.

W/O Mage T6 helm (CSD): 155 hits, 232 crits
With: 155 hits, 239 crits

The only talent I have that would effect this is Playing With Fire (3% increased spell damage: 150*1.03=154.5 round up to 155)

The procs seemed to be really stringy, sometimes lots in a row, other times very very few for a long while. Probably just like all other procs in that sense.

Did anyone check reflective shield yet?

From the responses above, it seems that Deathfrost is actually TWO enchants.

You have an enchant that's exactly like Fiery/Icy. That is, procs off melee attacks with the weapon itself (so wont proc off Ranged or offhand), has no internal cooldown, and has an averaged PPM. Not sure what the PPM actually is yet, but we should look into that.

You have an enchant that works like the Shattered Sun Scryer Necklace proc. That is, a high proc chance, and internal cooldown (50% and 20 seconds is the implication so far). The fact that a proc from this deathfrost enchant is an identical bolt to the melee one is kind of inconsequential, it seems its treated totally separately.

So effectively it really IS two enchants in one. The main things to test:

1.) If you're a dual wielding shaman and have it on both hands, and just use shocks/spells, does the 20 second cooldown count for both enchants? Would you proc twice as many bolts from spells alone? I'd guess for spells alone having two deathfrost enchants is no better than having one, as it likely applies an aura to the person that gives them the proc chance.

2.) Is there any way of avoiding the proc from Spell resists, or is it 100% "hit".

3.) Exactly what is the PPM when using just melee abilities.

4.) Whilst we've established that the melee/ranged haste effect doesnt stack with thunderclap (TC is better so overwrites though the debuff stays up), a test to whether it affects the cast time of boss spells is handy. I'm guessing that anything that is affected by Mind Numbing will be affected, and anything immune won't be, of course.

I'm afraid I can't be much help with the PPM values, but I did notice some things--Deathfrost has a fairly high proc rate, but won't proc if the spell didn't cause damage due to Mana Shield or resists. Immolate's initial damage can cause the proc, but not the periodic damage. No other DoTs yielded a proc, so I can only assume it's tied to direct damage. Wouldn't proc off of my wand, but that counts as a ranged shot so that's a given. As said above the cast slow doesn't stack with Curse of Tongues, the stronger effect simply overrides it.

One time it looked like my Felguard applied the proc, but since that doesn't make any sense, is obviously wrong, and seeing as how I could never replicate it, I'll just pass it off as several seconds of lag.

The internal cooldown is somewhere between 21 and 28 seconds. It's not 20.

Here's an admittedly short test that I ran Wow Web Stats

It doesn't proc off the application of dots or dot ticks as per the description.

It likely doesn't proc off Timbal's (10 procs, no Deathfrost).

When cycling Mind Blast (7 second total time between casts), I never saw a proc on the 3rd Mind Blast, it always took at least 4 casts.

Including the initial proc in the log it breaks out as follows. I'm assuming that the first 3 casts in successive applications are always within the cooldown.

11 procs in 20 casts, no where near enough data to pin it at 50%, but for my purposes I'm happy assuming it to be 50% and 24-25 ish seconds (stdev on 20 tries of a 50% chance is 11.2%). If it was a 20 second cooldown my 3rd spell would have applied the debuff at least once as 10 chances, 0 successes at assumed 50% is a 1 in 1024 chance that I wouldn't have seen one.

That's some great data posted there, awesome. Just a supposition by the way - a lot of things have 45 second internal cooldowns as a value. 22.5 seconds is exactly half of this and fits at the right level between your values. It's entirely a guess, but seeing as how they work things out based around certain PPMs a value of exactly 22.5 seconds feels somehow logical for Blizzard.

Though, total guess of course.

If the lowest time you've seen was 21 seconds, then this means that the cooldown can very well be 20 seconds or lower.

It sounds like this is best for enhancement shamans because they can take advantage of both the spell and melee procs, so you're getting around 300 damage a minute from the spells, plus however much you get from melee procs.

Now to find out how it stacks up against mongoose/executioner. I'd imagine it's superior at low levels of gear

Game database sites seem to confirm the 50% proc chance for spells.

Deathfrost - Spell - World of Warcraft

Depending on which abilities count as what sort of attack, it could be good for Retribution Paladins as well. They can't dual-wield and double their melee procs that way, but they can use both melee-type and spell-type abilities. Sometimes you might even be able to tell the difference, but that's for another thread...

Permanently enchant a weapon so your damaging spells and melee hits occasionally inflict an additional 150 Frost damage and reduce the target's melee, ranged, and casting speed by 15% for 4 sec.

Dont say anything about item level requirement, so lv19 twinks can have it?

ilvl 60+

I have had mine refresh from using 1 in my mainhand.

Can proc on damage shields, ie lightning shield so probably reflective shield as well. Didn't seem to be able to proc on water/earth shield however I didn't test very long.

A very nice pvp enchant for priests, I'll certainly be using this over 81 healing.

I am curious if this enchant is beneficial for a Prot Paladin, at least for single-tank content where there is unlikely to be a TC happening (heroics, kara, etc.).

I am curious if the melee/spell proc rates would be very much like the enhancement rates - would it proc separately for seal of righteousness hit versus weapon hit, does it proc on reckoning, etc.

Intuitively, it would seem that because it is frost damage vs the holy damage benefit of spellpower, it would not be as good for threat generation. However, the 15% reduction in attacks would be beneficial, particularly for fast-hitting mobs such as Prince (phase 2), Halazzi, etc. And depending on the uptime of the 8-second debuff, it seems a no-brainer for a fight like the Shade of Aran (longer spell casts increase chance of interrupt, cause him to cast fewer spells, use less mana, avoid the polymorph) if you don't have an enhancement shaman in the party.

Lastly, I wonder how this enchant looks when evaluating it as a swap-to enchant rather than a full-time enchant. I wonder if it would be useful to use Deathfrost until a proc, then swap to +dmg for 20 seconds or so, then swap back to the Deathfrost weapon. Perhaps via an add-on similar to what Caster Weapon Swap does for Spellsurge.

Having read all this I have to admit I thought it was interesting for PvP as an enchant - over the usual +40 spell dmg, but from what you have all said - I just wander to confirm - it does not proc from DoT's - so as afflication the only proc I would get would be a chance of immolate or Drain life or incinerate spells?

Which in reality - against the melee classes you'd want to be using against makes this really not as useful as you think - if u keep getting pushback on the cast.

So probably will stick to +40 spelldmg unless some1 knows this does proc of DoTs.

Just let 3 mobs chip away at me with reflective shield from 100-0, probably something like 100 hits each, no procs yet.

This could have been good

Will try it some more in a while.

Edit: Any testing requests? Will check dots, etc... in about an hour.

Edit2: 10 mobs or so killed with shield, no procs, another 10 killed with shadow word pain and shield, no procs.
Does not proc on SWP application or periodic damage.
Procs on like 1 in 5 smites/mind blast.
Procs on holy fire initial damage but not periodic

Calling a no on periodic damage for anyone.

Just tested on a friend and attack speed was the same when Thunderfury and Deathfrost compared to just thunderfury being up. The debuff does stack but the reduction in attack speed doesnt.