May you help me with this attack?

I am making a new game, and I am making attacks for it, I have one where if you press the letter 'V' a bunch of brown blocks that look like dirt will appear, but, I want it to, kill people when touched, and have an animation like it spawns in a line, and it destroys itself after 5 seconds. Here is the script:

Player = game.Players.LocalPlayer
Char = Player.Character
Torso = Char.Torso
Mouse = Player:GetMouse()

        function Earthkick(key)
               key = key:lower()
               if key == "v" then
                print("EarthKick successful!")
               for i = 1, 100 , 3 do
                    EarthBlock = Instance.new("Part")
                    EarthBlock.Parent = workspace
                    EarthBlock.Size = Vector3.new (math.random(4,6),math.random(4,6),math.random(4,6))
                    EarthBlock.Anchored = true
                    EarthBlock.TopSurface = 0   
                    EarthBlock.BottomSurface = 0
                    EarthBlock.BrickColor = BrickColor.new("Brown")
                    EarthBlock.CFrame = CFrame.new(Torso.Position.x,5,Torso.Position.z) * CFrame.new(0,0,-i) * CFrame.Angles(math.random(),math.random(),math.random())

        end 
    end 
end
Mouse.KeyDown:connect(Earthkick)

Thanks for the help!