Legionnaire's Walking Fortress upgrade Siege-Breaker states: "Every attack that strikes you reduces your cooldown time
s [....]" (Note the pluralization of the word "times".) Suppose you had just used War Cry and then Walking Fortress / Siege-Breaker back-to-back. Which of these active abilities gets the reduced cooldown from Siege-Breaker?
Legionnaire's Flow Of Battle states: "Every critical hit reduces the cooldown time on your abilities [....]" (Again note the pluralization, but this wording much more strongly implies that all active abilities are affected.) Again suppose you had just used War Cry and then Walking Fortress back-to-back. If you start critting, would Flow Of Battle reduce the cooldown times for both War Cry and Walking Fortress?
Keeper's Barrier upgrade Elegant Defense is more clearly worded: "[...] Each time a Barrier you have cast expires, the ability's cooldown time is reduced." This seems to mean that Elegant Defense only reduces the cooldown of Barrier, not of other powers like (say) Chain Lightning.