Taunt does two things. First, it forces you to 100% of the current target's threat. Second, it applies a fixate effect that locks the boss onto you for three seconds, meaning that even if someone else would otherwise pull aggro, the boss won't actually attack them until the fixate wears off.

The fixate effect is on diminishing returns, however. The second use within twenty seconds (or possibly fifteen, I forget the exact duration of the DR check) will have half duration, the third will have a quarter, and then the boss will go completely immune to BOTH parts of the taunt effect, which you generally want to avoid. On tank swap encounters, there's generally more than enough time between taunts that the boss should never go immune. There are rare cases when it might occur, such as ping-ponging Ragnaros for P4 empower if you don't have a trap available, but those are exceptions rather than the rule.

So, yes, it's generally a good idea to use your taunt off the pull, just in case your first attack is avoided or misses. Hunter misdirects/rogue tricks might make it so that you don't NEED to taunt, but since taunt is off the GCD and it still provides a safety net, there's no reason not to.

It will recalculate whenever you refresh it with MS, so any benefit to reapplying it pretty much gets negated there.

Hello,
I have a question. Why druing deadly calm execute consumes rage? Is it some kind of bug or?

I believe it has to do w/ the Execute abillity able to consume extra rage in order to do additional damage. Execute - Spell - World of Warcraft is the equation on Wowhead.

I don't really see how that is misleading. Arms has superior consistent damage output even on single target--Mor'chok, Zon'ozz normal, Ultraxion--and better AoE with Bladestorm, Sweeping Strikes, and Blood and Thunder. The only situation in which Fury is superior is Spine because Fury's cooldowns allow for higher dps during the Tendon burn, and possibly Hagara during Feedback, although Arms is strong on that fight in dealing with Ice Tombs. The "siginificant advantage" is simply the ability to put out more damage consistently. Right now Fury is the gimmick spec.

I guess he's looking for something that arms can provide over fury because Kurathikai mentioned Morchok & Ultraxion, but on single target fights it's simply arms superior damage - on all other fights you can at least use sweeping strikes for free damage.

Just have a look at the top parses on WoL, ignoring the absolute highest ranking due to tentacle RNG:
Morchok: arms top 100 above 42k, fury top 100 above 35k
Ultraxion: arms top 100 above 50k, fury top 100 above 44k

I'd recommend using Spec Score 25H - DPS Bot - RaidBots - Web Tools for WoW Nerds for further comparisons, the discrepancy between speccs is just that large even on single target fights justifying labeling fury as "gimmick" specc.

Would you guys recommend using cd's such as recklessness, Blood Fury, Rotting Skull, Deadly Calm, and Inner Rage ONLY when Colossus Smash is up as an arms warrior?

Also using Recklessness and Rotting Skull while Slaughter has 3 stacks?

Any tips on using these cds for optimal DPS on fights like ultraxion, where you are on the boss all the time.

For H Morchok is there a way to stay on the boss while he is casting Black Blood of the earth as an arms warrior? Ex: A DK can use Anti Magic Shell at 2 stacks of Black Blood of the Earth and survive.

You can pop Shield Wall and stay in the Ooze for about 4-6 seconds, but you won't be doing a lot of damage that way. It's better to complete a full rotation, Heroic Leap out and then Charge in. I don't do this because I like keeping HL for extra Mobility during running from Crystals to Boss and so on. You can do it if you move the boss next to the Crystal all the time.

It depends on the fight. For most fights Heroic Creche is the best. For Yor'sahj, Bone Link Fetish is supposedly the best as Creche proc can get wasted on DPSing the Ooze or running from Boss to the Ooze, and RS doesn't always time correctly due to the random nature of the fight. However you can do some really ridiculous burst with RS for your Bladestorms, I recall doing around 135k at one point when I was testing RS for Yor'sahj.

For Hagara and Zon'ozz and Spine, Rotting Skull is the best, although I believe you can use Creche/BLF for Zon'ozz as well as CDs do align well most of the time, and BLF can do massive damage on Zon'ozz after a few Void Diffusions.

Haven't started on Heroic Madness yet, but I believe Creche should be the best as it's just a constant DPS race.

BLF scales much better then any other trinket on any AoE fight, espicaly on madness due to spellweave.

I have a question about Spine of Deathwing HC. Since fury > arms for the burst on Burning Tendons, what reforge should be done? I know i have to drop all my exp, but what i get the most benefit of? Hit 27%, crit or mastery?

I apologize in advance as this question has probably come up before but I'm hearing different answers. When in Execute range, I've read that it's best to only use MS to keep Lambs up, and the rotation would be CS>Execute regardless of what your rage is. Other guides say to use your normal rotation, and only use Execute to fill in free GCD's and only if rage is 30+, ignoring Slam completely. can anyone shed some light on this?