Knife Kill Streaks

Since the knife is hardly used as a primary (Unless you are doing a challenge) I was thinking there should be an implication of knife kill streaks.
Since the knife is combat weapon and yields very few kills then kill streaks would reflect that (Other than the 5, 15, and 21 kill streaks of using achieving through gun and knife kills).
The Kill streaks would not give killing kill streaks just boosts to players stats (Potion effects or buffs).

Getting a Five kill streak with just the knife would reward the player with a times one speed buff for 20 seconds.

Getting a Ten kill streak with just the knife would grant the player with a times two strength buff for 10 seconds.

Getting a Fifteen kill streak with just knife will land you a times four health boost buff for 30 seconds (Doubles players health)


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The 5 kill streak would give the player extra speed to get away from players, continues the killing spree, and is enough to almost advance a player to a 10 knife kill streak.

The 10 kill streak would give that extra strength to one hit players with the knife so get to a 15 kill streak or switch to your gun and get kills that way.

The 15 kill streak would give the player double your health (20 becomes 40) for 30 seconds, much like how the nuke kills all the enemy player this kill streak gives the power to you in health. Latest 30 seconds to give enough time for health to regenerate to 40 and you deserve it if you get this.

These kill streaks would work by either one or two ways;
1.) At the hub you can selected through the ender eye knife kill streaks.
2.) By getting one kill with knife will start the count for knife kill streaks. If the player gets a kill with any lethal, tactical, or gun before they get there first knife kill streak (Five kills) then the kill counts will go towards the normal kill streaks. If the player gets the first knife kill streak and then gets a kill using lethal, tactical, gun, or gun the kills will continue onto the normal kill streak. If the player gets a 15 knife kill streak and gets the health boost the player will not be able to continue onto a 21 normal kill streak.


-Comments or questions would be beneficial.

 

The speed buff was at 30 seconds originally but I thought that a player could easily get to a 10 kill streak and have that effect plus strength which might be a problem.
The strength buff x 2 was at 25 seconds but that is a one hit kill which is a little much since 25 seconds is a bit long in game.
The health boost x 4 seems perfect for me.

 

They do not even have to be effect buffs this was just one idea that I had and though I should share.
Really its more of a challenge for fun rather that getting the most kills.
I can see the effects being better / longer since you do have to only use the combat knife.
For the 15 knife kill streak I first though of the invisibility buff for 15 seconds then removed that I idea because I remembered that the armor would negate the effect.