The resonance level of the Wind's Phantom only needs to reach 80% to use the Strong Wind Phantom.
The puppet specifically told him a method, allowing Asa's soul to manipulate this phantom, just as it manipulated the phantom initially.
Asa's essence is that of a prisoner in the Dream Realm, and the Strong Wind Phantom can be considered an extension of Rod's soul, almost equal to an extension of the Dream Realm.
Therefore, the phantom can become a new Prison Cage to imprison Asa.
The puppet can obtain control of the phantom, and as the second key person in the Dream Realm, it can pass this control to Asa.
If Asa attempts betrayal, Rod only needs a thought to dissolve the phantom, causing Asa to vanish and be forcibly sent back to the Soul Altar.
Therefore, this plan is quite safe.
The biggest challenge is convincing Asa to willingly work for Rod.
Aphro did not initially have much hope, but to its and the Book of Knowledge's surprise, Rod convinced Asa with just a few words.