INNER RAGE RECOMMENDATION
Inner Rage skill is rarely trigger if your armour is too good.
I suggest, if the inner rage passive skill is trigger in 50% hp of hero and the damage of hero is increase by 10%-40% (defend on level) with 10seconds duration.
I said that this passive skill is hard to trigger, i suggest to add new skill like sacrifice the 50% of hp but your hp not lower than 1hp and increases the lifesteal and resistance parameter by 15%- 40% defend on level. Seeker is the weakest in the War, so adding resistance is good to increase survivability.