So you want to tank on your DK? This is a small non-overwhelming guide to tanking with a death knight, whether your new to the Class or just a long time DPS DK that wants to tank this guide will hopefully help you. I will also share my key binds if you wish to use them. This is from a human blood death knight perspective.
The abilities you will need to have on your bars, where you put them is your choice however I will tell you how I key bind mine.
1. DS : Death Strike (this heals you)
2. HS: Heart Strike (aoe damage)
3. PS: Plague Strike (puts a disease on current target)
4: IT: Icy Touch (puts a disease on current target, can be used long range)
5. Outbreak (puts the disease from both PS & IT on current target, can be used long range)
A1: Horn of Winter (use it always, should never be off cool down)
A2: Death Pack (make a macro that looks like the macro below and put it on this button, this is your oh shit button when your low)
/showtooltip Death Pack
/cast Raise Dead
/cast Death Pack
A3: Blood Boil (aoe attack, does more damage to targets that have both your diseases)
AQ: Every Man for Himself (trinket, if not human ignore)
AW: Dancing Rune Weapon (use when you have a lot of Rune Power)
AD: Death n Decay (use when you have 3 or more adds)
F: Mind Freeze (interrupt a cast)
E: Anti Magic Shell (use to absorb magic spells)
R: Vampiric Blood (use when low on hp, gives u more health) this is also your whisper reply, i recommend using alt+r as new reply
T: Icebound Fortitude (use when your taking a beating and healer is struggling to keep u up, or when u pull alot of adds)
Z: Death Coil (use when u have more then 50 rune power and your runes are on cd)
X: Empowered Rune Weapon (use when all runes on cd and you need to death strike)
V: Bone Shield (use on cd, but not if u already have the buff)
Scroll Up: Dark Command (taunt)
Scroll Down: Death Grip (taunts and pulls target to you, does not work on bosses.. the pulling part)
Youll also need: Rune Strike and Strangulate.. put em wherever.. i got em binded to my mouse.
So now that you have keybound all these abilities, you que up for a dungeon and your about to pull the first trash pack. Here are some rules I follow, they may not be the most efficient to some but it has worked for me for the past 2 years.
1. 2+ Adds, pull w/ outbreak and blood boil, once all adds are in melee range heart strike and blood boil everytime it procs
2. if your getting low on hp use death strike
3. On single target, death strike and rune strike
4. never leave casters alone, they will generally aggro onto healer. taunt and strangulate or death grip them to you
5: always mind freeze at the last second of a mops cast, if u interrupt at the beginning that's just more damage your taking
6. never give your back to a melee
7. download an add on called GTFO, when your worried about mobs u forget to look @ what your standing on sometimes, especially when your new.. this addon is great for getting out of shit.
8. be nice to your healer, always keep an eye on him especially if shit is hitting him. Here are some things that will piss off a healer especially if your gearing up in randoms
*standing in shit
*letting shit hit him
*pulling when he has no mana
*not using your cds
*calling him bad because you decided to pull 4 trash packs and you wiped
9. if your going to LOS pull, tell your group.. dps are retarded especially melee and charge the target before it gets to you
10. If your not on last boss, before you decide to need a dps item check if the other plate wearer in your group needs it. If he already greeded ask him if you can need anyway, either whisper or chat. Why? Well when your tank trinket drops the chances of him ninja'in it are much lower.
disclaimer: if all this is common sense to you, then you are not a novice and should go to icy-veins.com for more in-depth guides