Varus Tiny Gameplay Tweeking

Varus' current passive has always been the thing on his kit that is extremely meh, and is just decent at best.

Here is a concept idea:

Living Vengence (Passive): Killing a unit permanently grants Varus 0.15% Attack Speed. This bonus doubles for 6 seconds upon gaining a kill or an assist.

A more realistic number for bonus Attack Speed per games will be between 25%-45% (~150 - 300 minions/monsters). This idea will just emphasize Varus' late game potential, make his passive useful for teamfights, and all while not making Varus too snowbally early game but also grant him that scaling as a marksman.

EDIT: Here is another unique idea as well, Varus' spells reduce in cooldown by 1 second for every Blight stack that it proc'd (so 1, 2, or 3 seconds lower cooldown) this will only work for the spell that directly proc'd the blight stack (so that Varus' ultimate is not always up but can be 3 seconds lower than what it would normally be which is not much for an ultimate cooldown but a lot for his Q and E)