execute @e[name=Powerup,tag=Snowball] ~ ~1.5 ~ scoreboard players tag @a[tag=Murder,r=1] add FreezeSnowball
execute @e[name=Powerup,tag=Snowball] ~ ~1.5 ~ scoreboard players tag @a[tag=Innocent,r=1] add UnFreezeSnowball
execute @a[tag=FreezeSnowball] ~ ~-1.5 ~ kill @e[name=Powerup,tag=Snowball,r=1,c=1]
execute @a[tag=UnFreezeSnowball] ~ ~-1.5 ~ kill @e[name=Powerup,tag=Snowball,r=1,c=1]
give @a[tag=FreezeSnowball] minecraft:snowball 1 0 {display:{Name:"§3§lSnowball",Lore:["Throw on the player that you want to freeze"]}}
give @a[tag=UnFreezeSnowball] minecraft:snowball 1 0 {display:{Name:"§3§lSnowball",Lore:["Throw on the player that you want to save"]}}
scoreboard players tag @a[tag=FreezeSnowball] remove FreezeSnowball
scoreboard players tag @a[tag=UnFreezeSnowball] remove UnFreezeSnowball