Possible way to balance Ds?!?

I know how much killers hate Ds and I'll admit that it is annoying. So instead of making it a perk thats used over and over. What if it was and item? My idea is that you carry like the stone thing or knife (whatever it is in the ds perk icon) and when your on the killers back you can use it via skill check. After using. It depletes it. Different colors could stun killer for different amount of time ex: red:6, purple:5, green:4 or something. Give me opinions or ideas to make it better

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