Originally Posted by Lodekim

If you have a timer for the shield (bigwigs has one) you can know it's coming, and make it required that everyone is topped up before a shield goes up, that way you can give it a short count to get the last bubble for low hp people or someone who just got hit and then break it. Waiting for everyone to be at 100% will be a big judgement call, if you make it expected that everyone is topped up and just wait a few seconds and throw it, he won't heal as much and people will just have to learn to top off the raid.

As for crushings on the tank, he should be preventing them mostly with shield block up constantly, but on top of that, a crushing shouldn't be fatal on Naj'entus. Right now with the gear I'm at (I hate you 31% dodge) I end up hoping for crushings sometimes to give me enough rage to hold aggro. If a single crushing is killing him outside of maybe if it comes at the exact same time as the shield popping, he's not being healed up enough. He should be able to stop most of them, but from time to time he'll get parried, the mob will attack faster, and a crushing blow will get through.