There is so much going around and it's making me annoying with people giving the wrong advice, not that this is law, christ no. This if from personal experience on here. Some may even call me stupid, but I'm gonna let them. Tanking is something I seriously enjoy, I've cleared all released content on molten, and have the pleasure of being a tank in Molten's best PvE guild.
Spec 1 - Runic Power Hording, pure tanky tank.
Spec 2 - Soloer, Lichborne.
Spec 3 - AOEer.
Most of the talents are pretty self explanatory.
A few however are not, and some may say are optional so I will explain why to use them.
Abomination's Might: It's a raid buff, with the reduction in Marksman Hunters (survival is the best spec for this patch and for Firelands) there is a higher chance of not having the 10% Attack Power buff for your group (it's rare to get a Pala and Druid together so Kings is always a priority for buffs). So take it and help cover the lack of an AP buff with this.
Lichborne: Some might see this as obvious, some don't. It is important. It allows you to use it for two uses, some Mobs/Bosses fear, this allows you to break that and carry on with the aggro. Two you can use it to heal and this is very important, say if your healer gets trapped (Shannox), Froze (Maloriak), or is dead you have that chance to heal up enough to then Battle Rez them after (Also why I glyphed Death Coil, to give more healing)
Epidemic: Keeps your diseases up (important for Scarlet Fever (10% Damage reduction)). Meaning you can focus on actually tanking and surviving rather than worry about constantly maintaining your uptime with them.
Endless Winter: There are a lot of encounters where you will have to interrupt, and there is nothing worse than having no Runic to interrupt, and this could cause a wipe. Talent it to make it free and you have one less thing to worry about.
You do not need hit rating, or expertise. Your Death Strike will heal you and give you your blood shield whether it lands or not.
Mastery > Avoidance (Inc Strength) > Stamina
Mastery is our most important stat, Blood Shield applies a protective barrier to us, absorbing physical damage. For every Death Strike heal you gain a certain percentage as a Blood Shield. This itself makes us pretty unkillable, if you have amazing rune management you can have constant uptime on this.
Avoidance is not as important, CTC (Combat Table Coverage) is not applicable to DKs. Since we are nothing more than a meat shield. But it is our secondary stat. The more you dodge/parry the more your blood shield can build, so it's still a needed stat. Try aiming for 35-40% Avoidance. (Remember your Horn of Winter buff gives Strength which scales into your Parry rating)
Stamina isn't as important, due to the mechanics of DKs. Let the druids have their fun with stamina. Don't EVER stack this, but you will need to keep a certain amount, go for socket bonuses on your gear, since most give you +Stamina from them. There will be fights where it is mainly magical damage, for these your blood shield is pretty useless (Nothing more than absorbing the bosses melee damage). Keep a Stamina trinket on you (Vial of Stolen Memories (BOT-V&T) or Symbiotic Worm (BWD-Mag)) for these fights, and make use of your AMS. (Some say to get Mirror of Broken Images from Tol Barad, but personally AMS is on a shorter CD, and you would best be off with a 2nd Stamina trinket)
Unless your socket bonus is Mastery, ignore it. Use [Fractured Lightstone] - 50 Mastery.
Red: Fine Lava Coral - 25 Parry + 25 Mastery
Yellow: Fractured Lightstone - 50 Mastery
Blue: Puissant Elven Peridot - 25 Mastery + 37 Stamina
Helm - 90 Stamina + 35 Dodge - Arcanum of the Earthen Ring - Reputation (Exalted)
Shoulder - 75 Stamina + 25 Dodge - Greater Inscription of Unbreakable Quartz - Reputation (Revered)
Cloak - 250 Armor - Greater Protection
Chest - 20 to All Stats - Peerless Stats / 75 Stamina - Greater Stamina
Bracers - 50 Dodge - Superior Dodge / 195 Stamina - Leatherworking Only
Gloves - 65 Mastery - Greater Mastery
Legs - 145 Stamina + 55 Dodge - Drakehide Leg Armor
Boots - 50 Mastery - Mastery
Weapon - Rune of Swordshattering - 4% Parry
Helm: Necrotic Boneplate Faceguard - T13
Neck: Guardspike Choker - 1250 Valor
Shoulders: Necrotic Boneplate Shoulderguards - T13
Cloak: Indefatigable Greatcloak - 1650 Valor
Chest: Necrotic Boneplate Chestguard - T13
Bracers: Titanguard Wristplates - Crafted (Blacksmithing)
Gloves: Necrotic Boneplate Handguards - T13
Waist: Forgesmelter Waistplate - 1650 Valor
Legs: Necrotic Boneplate Legguards - T13
Boots: Stillheart Warboots - Ultraxion (DS)
Ring: Hardheart Ring - Shared Boss Loot (DS)
Ring: Signet of the Resolute - 1250 Valor
Weapon: Experimental Specimen Slicer - Yor'sahj (DS)
Relic: Stoutheart Talisman - 700 Valor
There is no real set list, due to mechanics, different ones are up for different choices.
Fire of the Deep - 1650 Valor
Soulshifter Vortex - Yor'sahj (DS)
Indomitable Pride - Shared Boss Loot (DS)
Wowhead link with gear fully Enchanted, Reforged and Gemmed - BIS Blood DK 4.3
Death Strike: Single target attack, dealing high damage and heals you for 20% of the damage you taken in the last 5s (for a minimum of 7% max HP) and this gives you your Blood Shield based on a percentage healed (scales from mastery). Also turns 2 (1F/1U) runes into Death Runes.
Heart Strike: Hits 3 targets within melee range, damage is based on diseases on the target. (another reason to have diseases up and spread)
Rune Strike: An Unavoidable attack that deals a moderate amount of damage but gains a lot of threat. 45% chance to refresh the CD on a used rune.
Death Coil: Deals shadow damage at range, idea for kiteing, does have a high Runic cost, but also can refresh a random rune. Can be used to heal yourself if you have Lichborne active.
Outbreak: Instantly applies all your diseases to the target
Pestilence: Spreads your active diseases on the current target to all nearby targets.
Death and Decay: AoE ability dealing a DOT effect to all mobs within the area. Can be places at range.
Managing your threat:
Taunts: Dark Command, Death Grip.
You should really have Omen installed, it's important to track your own and others threat.
Open with an outbreak to get your diseases on, Death Strike till your heart is content. Keep your Scarlet Fever on the target, and if someone goes a little to HAM and steals aggro, call them a twat, taunt it back (Dark Command) and carry on.
Open with a Death & Decay, into an outbreak on one target, Pestilence to spread it, and then use Heart Strike and Death Strike. It's best to tab target spam this. If you feel your loosing too much treat (you should be fine though with this method) you can use Blood Boil every now and then.
We have a lot of defensive CDs.
Icebound Fortitude, reduces damage taken by 50% for 12s, also makes you immune to stun effects. This is key for when you are taking too much damage. It's ALL damage, not just physical, so can be used on unavoidable magic damage.
Vampiric Blood, this should be talented so it gives extra healing. Allowing your healers to heal you us really quickly after taking a lot of damage, can be used just before the damage happens as it will make the hard heals more effective. Also while this is active your Death Strike heals for more, and as such scales your Blood Shield too.
Anti-Magic Shell (AMS), absorbs magic damage, significantly reducing the damage you take form this. Can also stop certain boss mechanics to not apply a debuff (BH-Argaloth On retail it should not apply the Meteor Slash debuff is you have AMS active when it is done, meaning a DK can pretty much solotank this if they fully understand their class and the encounter. But this is Molten, and it doesn't work. Only successfully solo tank BH once, due to some sheer luck).
Raise Dead/Death Pact is pretty self explanatory for every spec. Use it while you have Vampiric Blood active as it has a Lay on Hands effect.
Dancing Rune Weapon, is fantastic. It increases your parry rating by 20% while active. Best to be used when your either on your low HP or when there are adds, since it also increases threat making you not only take less damage but also allowing you to significantly increase your threat on the mobs.
Rune Tap, should be glyphed. It heals you for 10% and also heals your raid for 5%. Should be used after a group AOE attack to help pick up your raid HP.
Empower Rune Weapon, should be mainly used as a defensive. If you are low life, there is no incoming heals, use it, Death Strike.
Army of the Dead, contrary to popular belief that this is just a DPS increase, this is a HUGE defensive CD that can mitigate a on shot mechanic. While channeling (4s) you cannot dodge or parry, BUT you receive damage reduction equal to your Dodge and Parry. Meaning you can reduce about 35-40% of the incoming damage for 4 seconds. Have too many stacks on Warlord? Stand and cast Army of the Dead.
Macros for Blood aren't primarily important, but are more there to be helpful with things that need to be done quickly. Like healing.
The most important macro you should have, zero questions asked.
This will Use your Vampiric Blood, Ghoul Sac and if you have an on use trinket (Vial of Stolen Memories, Stay of Execution, Darkmoon Card:Earthquake etc)
#showtooltip Raise Dead
/castsequence reset=60 Vampiric Blood, Raise Dead, Death Pact
Omen Threat Meter - Tracks your current threat for yourself and those within your group
Blood Shield Tracker - Great addon for tracking your Blood Shield.
Magic Runes - Customisable Rune bars so you can clearly see your runes and runic power.
This is a brief little guide of current molten content and how to deal with them.
Thanks to Allskill for this!