The spirits of the earth are born basically from the Empress' power. And even if they made a contract with a human, they always tell them.
"If you do something against my Empress, it will be the day we break the contract and can kill you anytime."
But no one understood.
If Number Two and Phillip were to know it, they would've jumped in excitement. They almost got exposed, but because of the familiar magic that surrounded them, it keeps them safe for the moment.
The Earth Spirit, called by the man, is only a low-level spirit. And can only distinguish a slight trace of the sacred magic. But because the spirit did not know from whom was the magic from, the spirit manipulated the dust and did not allow the humans to discover the traces of Number Two, Phillip, and the rest.
What neither of them knew, is that, Number Two saved everyone when he used his spell, [Eyes of Truth].
One spell used with Rosella's shared magic.