Quote Originally Posted by Cabalabob View Post
Sentinel - 40% damage reduction for 10 seconds.
Vengeance - 30% damage reduction for 15 seconds + counter physical damage.
Shadow wall - 30% damage reduction for 10 seconds. All 3 min recast. Edit: vengeance is 2 min recast. Making it stronger than shadow wall with 1 min less on the recast.

Shadow wall is weaker than sentinel and has no extra effect like vengeance, yet has the same recast time. Why does shadow wall not get an extra effect? Maybe drains 50% of damage recieved as hp or restores mp equivalent to all damage taken when the effect wears off, or maybe make it add a reflect effect for magical damage?
All of the disagree.

Shadow Wall is a weaker cooldown because DRK has other tools in its kit that make up for it. Dark Mind comes to mind first which is essentially a 2nd, magic-only Shadow Wall with 1/3rd of the recast time and equal duration. Dark Dance has the same crazy-short recast and in addition to the physical mitigation, helps proc Reprisal which not only adds another 10% mitigation, but does so for the entire raid.

When you look at the power of its other cooldowns and realize that none of them are useless in a raid setting and synergize extremely well together, its clear why they didn't make Shadow Wall as strong as Sentinel/Vengeance. It doesn't need to be.