execute at @e[type=creeper,tag=!nocusmob] run scoreboard players add c skeletonk 1
execute at @e[type=creeper,tag=!nocusmob] if score c skeletonk matches 2.. run function rfi:mob/creeper/creeperkill
execute at @e[type=creeper,tag=!nocusmob] run tag @e[distance=..1] add nocusmob