Even with all of this protection, the cause and effect between Speedsters and Wargod is established.
And relying on this cause and effect, even if Wargod had a more powerful formation, Samara could probably break through it.
Because of this cause and effect.
Azief when he first knew cause and effect, he thought it is just some kind of law that binds people.
But after understanding it a little bit, cause and effect could even subvert reality and changes position of the superior and inferior
Hence, why so many beings are scared of being pulled into cause and effect that they did not ready to enter.
Because it could even subvert some common sense.
Common sense dictates that with Wargod abilities and power, if he really wanted to, he could supress Samara, kill Will and even better than that, he could block them from entering Interium in the first place
But because of the cause and effect established by Asargan with the Savi'krian race it related Asargan with the Speedsters.