It's not "bad" for phase 3 during Winds, it can possibly buy you a little bit of time. But honestly that is entirely dependent on how well your group uses raid CDs. As Dark said, most damage you take at low health without mitigation will kill you. Even if you do have it proccing during Winds, any of the other random ass damage will likely be enough to kill you.
Enraged Regen isn't bad, I've never needed more than 1-2 health stones uses really; but again, its how well your group spreads healers and mitigates damage.
Last edited by Archimtiros; 2013-08-08 at 06:29 AM.
Reason: too tired to make sense
Second Wind, purely due to its fire and forget nature although if its proccing, you are usually in trouble and the chances of it saving you are minimal
If I were going to use something more actively I would have to say Impending victory as requiring enrage with ER, while canonical seems a bit arse backwards