Originally Posted by
Reglitch
Life Cocoon is an above average tank cooldown in Legion, it arguably contends with the resto druid cooldown just through sheer brute numbers. People love ignoring that any percentage-based mitigation cooldowns only give effective health as a function of current health.
Let's say your Life Cocoon absorbs around 1.2 million, for pain suppression to match the EHP value of that - your tank needs to be in the condition to take ~3 million damage over the next 8 seconds. That's an absolute thrashing, the case only gets worse with smaller % values, a 20% mitigation would require 6 million damage to approach the EHP given by Life Cocoon. Moreover, Life Cocoon will always be effective, it's an absorb. That also means you can cast it regardless of what health value your tank is at, it's safer to cast a flash-heal equivalent on a tank at dangerously low health than it is to use something like Pain Suppression.
The one case where mitigation cooldowns were better in the past, i.e. bringing high damage intake to manageable levels, is entirely solved when you shit out two free massive HoTs and their mastery procs onto the tank. Even if your bubble gets instantly popped, the next 6 or 7 seconds you have 30-50% extra healing and a ReM on them. There's not a fucking chance someone will die for the next 6 seconds after you use LC.