Inspiration: New Rune/Keystone Concept: Revival Tag

Revival Tag [would be an inventory item single use]: (Would replace the area of the runes that let you reduce death timer, but on a better scale with a skill curve and something people would actually consider using.) Every time you score a kill or assist your Revival Tag is charged by -15 seconds from death timer. You have one Revival Tag and can use it at any stage of the game, but it's obviously better to use when its been charged up enough that it can instantly revive you.

Passive: Death timer is reduced by 10%

Would like some feedback from public, maybe a Rioter. :3