make a datapack for minecraft 26.2 that works on servers when the player kills another player (could be anyone) the player that kills the other player gains the effect speed with a maximum of the effect speed level 4 and after 10 kills the player gains the effect strenght 2 if the player dies at 10 kills they loose a level of speed and all the strenght until they get back to 10 kills, every death a level of speed is lost
