Their tenth clones had always been able to find them even if they teleported away. It was unnerving back then when Legion was ignorant about how they were doing it. But now it has become more distressing to know that it was simply due to luck.
Luck is just unreasonable and impossible to guard against. A blind man can kill a hundred people if he is lucky enough. Some of the blind man's enemies will even fall onto their blades and impale themselves. This feat will need an absurd amount of luck, but it is possible.
That's just what a mortal is capable of with enough luck. A world gods can do so much more with luck.
Legion-3 pointed out to them, "But there's more. There's also the Law of Changes. He can use this to affect the change of the state of targeted objects and entities. The first sage has indeed been hiding a lot from us."