User blog comment:BoltOfSpades/Vainemus, The Tainting Overgrowth/@comment-26870289-20150809092435

Ranges are missing, making someone with so much reliable cc scale with ad is obviously a bad idea and all abilities exept for his ult seem very boring and mechanically too simple.

Passive is from necrophos from dota and its considered unhealty even there. Also its too weak for duels and its small range makes it only yet very usefull for laning against melee tops.

I dont know q range but its propably similar too lissandra w. Not very interresting on its own and propably not a good idea to give to a melee.

Free lifesteal for adc is too strong during laneing and he can even use it himself since hes ad. Riot said they dont like strong auras for a reason.

Only ultimates should have such an instakill effect as your e has and maybe there shouldnt even be an ult like that. for origens see shadow fiend and axe in dota.

The ult however is a really nice idea. I dont see cast nor aoe range so i cant judge if its balanced, but definitly a nice idea. You might want shorter delays but maybe you intendet such a high cast range that its required.