User blog comment:MickB/Sla'arth, the Ancient Vigilant/@comment-5663427-20131030195029/@comment-5663427-20131031064656

My idea is something like this:

Since you already need to use 3 skills to trigger this passive without passive (or late game) his damage output is still very weak in late game (288 + 288 + 172.8 = 748.8 total damage after using arcane imprisoment without passive because it's damage is dependent on champion that you're facing) Also, since his passive is useful mostly in late game, you could do scaling like this: 2%/5%/8%/11% and change W's scaling to this: (damage per second): 24  / 39 / 54 / 69 / 84. Anyway, it's your choice, so I won't require those changes from you :d