This is a work in process build. I am considering moving towards a blade/hammer build to improve overall mitigation against bosses who have a high penetration (block helps here). The build has not been tested, yet, but I intend to run it through some dungeons fairly soon.
It is a very expensive build, clocking in at well over 700 points to get up and running. Additionally, there are very few build synergies between hammer and blade, so there are few build paths that will be useful as you move towards this build.
This build uses a single column attack builder, which may make it problematic in fights with extensive kiting. However the builder, Rupture, is placing AOE debilitates thanks to Improved Blasts and it is also bumping up your physical and magical mitigation thanks to Blowout.
You have two short duration closer, Aftershock which can provide a minor ward and Brandish which gives you substantially reduced incoming damage on use.
You have two moderate duration closer abilities. Crimson Theater, which helps with AOE threat and also provides additional chances of glancing thanks to Shadow Play. With all that defense coming in, Sixth Sense should be firing off fairly frequently, dishing out AOE damage and a 10% self heal. Blowout is your long duration hammer closer and it stacks 25% more hitpoints onto you since everything is already debilitated.
You have two utility abilities, each on 30-second recycles. Trucker gives you a closer ability which also buffs your block ability. The increased Blocks give you a better chance of processing Brick Wall. Stoicism takes the final spot in the build, giving you a dependable hate generator and damage mitigator.
Threat comes from Stoicism, Agitator, Crimson Theater and Brandish.
This will be a bit of a tricky rotation to manage.
Open combat with Trucker, this picks up your block chance and gives you some opportunities to impair. Immediately fire off a single Rupture to get the Debilitate effect in play (use a second if weakened is resisted). Now its time to fire off Stoicism to help with your hate generation. Then use your long duration consumers, Crimson Theater and Blowout.
Your regular rotation will be Rupture x5, Aftershock, Brandish. Use Crimson Theater and Blowout on cooldown, even if you have minimal resources up (1 is fine). Fire off Trucker on cooldown to keep your block rate high.
Stoicism can be used on cooldown in non-transition fights. In engagements with transitions (or phases where a boss is inactive), save Stoicism for the bosses return to action. Make sure to use Stoicism before engaging in these situation.
There are a few different modules possible with this build. First, consider swapping out Sixth Sense with Forged in Fire if you anticipate taking a single major spike of damage in an engagement.
I also debate between the use of Brick Wall and You’re Next. Particularly for Impair immune encounters, Your Next is clearly better.
If you are not blocking often enough to take advantage of Brick Wall/You’re Next, consider Enervate to help your damage output.
Unlike my other tank builds, this one generates no +hit as the combat progresses. Therefore, you need some +hit on your gear to avoid glancing. Additionally, this will be a low damage output build, you might need to go 30% or more attack rating talisman to offset the lower damage output.
You want +defence both for the mitigation benefits but to also increase cycles of Sixth Sense.
Additionally, you want +magic defense or +physical defense depending on the damage type of the encounter.
Finally, consider some +block. Other than Trucker, nothing in this build improves your block rating. However, unless (a) you have every other stat well covered or (b) you are facing a high penetrate boss, +Block is your last gearing concern.