Shield Block Follow

Shield BlockInstant 1 min cooldown

Requires Shields
Requires Defensive Stance
Increases your chance to block and block value by 100% for 10 sec.


Very interesting...

(from wowhead)

1) Increase your Shield Slam's damage. Since Shield Slam damage is partially based on your block value, doubling it will noticably increase the damage. Popping Shield Block as you Charge a boss and delivering a huge Shield Slam crit to its face locks down aggro like nothing else. Same concept in PvP, except replace "boss" by "squishy cloth wearer". :)

2) Increase your Damage Shield's damage. Same deal as Shield Slam, except Damage Shield shines a lot more when AoE tanking than when tanking a single target. (See #4.)

3) Rage generation. With 5/5 Shield Specialization you gain 2 Rage every time you block an attack. If you find yourself in a low-Rage situation Shield Block may help you get that little extra Rage you need to out-threat your DPSers. The more mobs hitting you, the more Rage you'll receive.

4) AoE tanking. A combination of points #2 and #3. Charge a group of mobs, pop Shield Block, and Thunder Clap. Voilà! The mobs are glued to you thanks to Damage Shield and you have more than enough Rage to Cleave, Thunder Clap, and Shockwave to keep them bashing you instead of the Mage.

5) Emergency "oh shoot" button. If your HPs take a sudden dip popping Shield Block can give your healer the breathing room he/she needs to save your armored butt. The 100% increase to your chance to block means that, for 10 seconds, all physical attacks made against you will be Misses, Dodges, Parries, or Blocks. Only in the last case will you take any damage, and it will be greatly reduced if your block value is high (which it should be). Also, given equal DPS, the faster a mob hits you, the greater Shield Block's effect will be.

6) On-demand Enrage / Revenge. The talent Improved Defensive Stance procs Enrage, and as mentioned in #5, Shield Block turns all attacks into Misses, Dodges, Parries, or Blocks -- the last three of which will Enrage you, increasing all your damage (and thus your threat!). Similarly, you can only Revenge after a Block, Dodge, or Parry. Using Shield Block at the start of a fight means this high-threat attack will be available as soon as it cools down.


So basically a 5/5 Shield Specialization is considered a mast have for aoe tanking ?
So basically a macro of type :

/cast [harm] Shield Block
/stopcasting
/cast Shield Slam

is considered a must have for increasing the amount of damage ss makes?
So how much block value we should get in order to avoid getting hit by aoe naxx normal mobs ? 1000? 1500? more? Using shield block will double it...(my descent epic block gear supports 1250 block value)