Alright so I wrote this script that make's orbs appear behind the player in a loop and when you click on someone the orbs fly towards them. It pretty much works how I want it with two exceptions that I can't seem to fix. The first is that sometimes after the orbs launch there's an error message in the output that says "rover is not a valid member of Part" and the orbs won't launch anymore after that unless I reset. The second problem is that I keep receiving this error "Humanoid is not a valid member of Workspace". I've tried fixing these errors but I'm at a loss so any help is appreciated. Here's my script :).

Player = game.Players.LocalPlayer

local character = Player.Character
if not character or not character.Parent then
    character = Player.CharacterAdded:wait()
end
wait()

Player = game.Players.LocalPlayer.Character
Number = Instance.new("NumberValue")
Number.Name = "dirc"
f2 = 25/4
tim = 1/100000
mouse = game.Players.LocalPlayer:GetMouse()
enabled = script.Parent.Switch


function go(Part)
	if not Part:IsDescendantOf(Player) then
	
	if Part.Parent.Humanoid == nil then
	print("not verified")
	end	
	
	if Part.Parent.Humanoid then
	print("verified")
	wait(tim)
	Part.Parent.Humanoid.Health = Part.Parent.Humanoid.Health-5
	end

	end
end

lunch = true
function launcher()
 if not lunch then
        return
  end
lunch = false
	print("get em")
	x = Player:GetChildren()
	for i= 1, #x do
	if x[i].Name == "Aura" then
	wait(0.1)
	x[i].Anchored = false
	x[i].Touched:connect(go)
	local rover = x[i].rover
	mouse.TargetFilter = game.Workspace.Baseplate
	x[i].rover.Target = mouse.Target
	x[i].rover:Fire()
	x[i].rover.ReachedTarget:connect(function()
		game.Debris:AddItem(x[i], 0.01)
	end)
	end
	end
wait(2)
lunch = true
end

function launch(spect)
if spect.dirc.Value == 1 then
for i = 2, f2*2 do
	wait(tim)
	spect.CFrame = Player.Torso.CFrame*CFrame.new(i/5, 0, i/10)
	mouse.Button1Down:connect(launcher)
end
end

if spect.dirc.Value == 2 then
for i = 2, f2*2 do
	wait(tim)
	spect.CFrame = Player.Torso.CFrame*CFrame.new(-i/5, 0, i/10)
	mouse.Button1Down:connect(launcher)
end
end

if spect.dirc.Value == 3 then
for i = 2, f2*2 do
	wait(tim)	
	spect.CFrame = Player.Torso.CFrame*CFrame.new(0, i/5, i/10)
	mouse.Button1Down:connect(launcher)
end
end

if spect.dirc.Value == 4 then
for i = 2, f2*1.5 do
	wait(tim)
	spect.CFrame = Player.Torso.CFrame*CFrame.new(i/5, i/5, i/10)
	mouse.Button1Down:connect(launcher)
end
end

if spect.dirc.Value == 5 then
for i = 2, f2*1.5 do
	wait(tim)
	spect.CFrame = Player.Torso.CFrame*CFrame.new(-i/5, i/5, i/10)
end
end

end

function activ ()
enabled = true
while enabled do
for i = 1, 5 do
	wait(tim)
	local spec = Instance.new("Part", Player)
	local rocket = Instance.new("RocketPropulsion", spec)
	rocket.Name = "rover"
	rocket.ThrustP = 80000
	spec.Name = "Aura"
	spec.Anchored = true
	spec.TopSurface = "Smooth"
	spec.BottomSurface = "Smooth"
	spec.BrickColor = BrickColor.new("New Yeller")
	spec.Shape = "Ball"
	spec.CanCollide = false
	spec.Size = Vector3.new(1, 1, 1)
	spec.CFrame = Player.Torso.CFrame*CFrame.new(0, 0, .5)
	local Num = Number:Clone()
	Num.Parent = spec
	Num.Value = i
	launch(spec)
	game.Debris:AddItem(spec, 6)
end
end
end

function non()
enabled = false
print("Off")
	Player.Humanoid.WalkSpeed = 16
end

script.Parent.On.MouseButton1Click:connect(activ)
script.Parent.Off.MouseButton1Click:connect(non)
Anonymous