'A Sovereign of all source of energy' Azief had long been tempted about the power that one would receive when making a fragment of power from the All Source into his Disk
It is why he had risked so much to get it.
Of course Azief did not know that is what sealed his fate and also bring his eventual clash with the Destroyer closer
Loki knew but did not stop him. Destroyer seek the Life Formula and the Life Formula is hidden inside the All Source.
Others might not know but Loki knows.
And there is a fragment of All Source energy in Azief body. He knew the cause and effect but he still didn't say anything.
Who knows why? Did he not want to sever the cause and effect? Azief could never understand Loki because he did not yet gain power that Loki once had.
The power of Sovereign. If he had it, he would understand so much more and his limited understanding would become then…unlimited