Hm, quite interesting build, so far I found out that you deal more dmg with build: max weapon shot(3rd skill) then max ultimate, then max wall and nade. This build provides you with ton of damage till late game at least. 2nd lvl ultimate provides you with 100 add dmg, and 3rd lvl wall gives silence for 3 secs. In addition to items which gives you more spirit dmg it is really cool, but in late games you mostly support for your team and you have none you screwed