local ServerStorage = game.ServerStorage.RainbowTrail:Clone()
local gamepassid = 10498381

local function hasGP(pid, gpid)
	return game:GetService("MarketplaceService"):UserOwnsGamePassAsync(pid, gpid)
end

local function attach(child, attachments)
	for i = 1,#attachments do
		local offset = tostring(i -1)
		local attachment = Instance.new("Attachment")
		attachment.Parent = attachments[i]
		attachment.Name = "TrailAttachment"..offset
		child["Attachment"..offset] = attachment
	end
	child.Parent = attachments[1]
end

game.Players.PlayerAdded:Connect(function(plr)
	plr.CharacterAdded:Connect(function(chr)
		if hasGP(plr.UserId, gamepassid) then
			attach(ServerStorage, {chr.Head, chr.HumanoidRootPart})
		end
	end)
end)