Second Wind on a WAR isn't worth it. If you buff it massively, you'll end up getting ~600 with Berserk active, ~900 with a crit. A 2 min CD, contingent on using 2 other abilities (Berserk and Internal Release), that heals you for ~10% of max hp isn't really a CD worth bringing. I'd rather have Awareness and Mantra, since Awareness, while it's not a guaranteed mitigator or especially noticeable when it's active, will at least provide *at least* that much damage over its duration (mainly because bosses hit really hard and Second Wind sets a really low bar).