Thread:Kitsune Tamamo no mae/@comment-28265227-20161128103217/@comment-4802891-20161221161351

It starts going up from lv5 and beyond, but I don't think there will be a damage reduction penalty for underlevelled Servants. I think a level 5 Servant will just get a 15% boost or something like that. It'd mean absolutley nothing but whatever...

The more interesting thing would be +50% for each level starting from 5, caping at 300% bonus damage on level 10, but I doubt it will happen because so many players have level 10 Servants... it would just make things insanely easy for them.