On Earth I

The Trickster is the other one that had been waiting for the arrival of Fir Her Waz.

One could even say he was even more interested in Fir Her Waz matter than Yewa Hafar

Loki had always been waiting for Fir Her Waz to arrive. 

Yewa Hafar would not be surprised if Loki Number Seven had already seen Fir Her Waz on the edges corner of the Milky Way galaxy during their meet before

But even if Loki knew, he might not do anything about it. He would not stop it even if he knew that this is Yewa Hafar plans

That is why Yewa Hafar was so confident in this scheme of his.

Because Loki also needs Fir Her Waz to enter Earth. This is because it is to prevent a time paradox.

This relates heavily to the origin of Loki the Trickster and his rise to power. 

Of all the thing Loki must change, the arrival of Fir Her Waz is something that Loki could not and must not change for his sake and for the sake of his plan