User blog comment:CrazyMori/Hakumen the White Void/@comment-3529242-20130203092723/@comment-5859769-20130203203440

The issue with making it something really high like 75% damage reduction is that every 12 seconds he can essentially turn off the harass of an enemy. I'm not sure if I want that. Many champions in lane would not feel as though their harass would be an efficient use of their resources against a 75% damage reduction every 12 seconds for 0 Megatama. I opted to go with a starting 35% that builds over time, so early game he is still very vulnerable to damage while having a sustain ability. The 12 second cooldown should ensure that it is not available every single time an enemy could feasibly go in for  a harass, and I might even raise that to 14 seconds. The utility of the snare makes it slightly different in use to how a shield would work. For example, if hit by Elise's human Q or W while using Zanshin, it stops her from diving to you for the duration of the circle, which would snare her and leave her vulnerable to Hakumen's E -> all other skills -> AA -> E combo.

His mobility has been significantly improved now. I thought about it for a while, and the strength of the Q dash in the way you suggested of 450 /375 is completely reasonable, considering the mobility of similar champions such as Riven, Lee Sin, and Vi. It also removes a lot of his potential damage by using 2 Megatama, so spamming it for chase can become risky.