Atma is brahman, satyam jnanam anantham
Shakti exists with brahman as its satyam and reflected chaitanyam in shakti is ishvara abhasa, there appears to be an ishvara and a shaktiman, with shakti, which itself is mithya, dependent on brahman for existence, and brahman reflecting in this shakti appears to be ishvara.
Shakti at the level of individual operates as ajnana maya, as avarana, as kArana sharira, which is destroyed as a result of jnanam, tat tvam asi mahavakya.
Tat tvam asi means, tat is brahman, and the reflected ishvaratvam is mithya.
Tvam is brahman, and the reflected chidabhasa is mithya, and the ahankara tAdatmayam is mithya.
Jnani is one in whom there is no avarana anymore, only the vikshepa operates as though.
So everything but the ajnanam is retained as though.
There are no special powers available for jnani as such.
Jnani can choose to pray to ishvara, wherein ishvara is known to be brahman and maya together, and ahmakara sahita sharira and chidabhasa operating and praying etc. is seen as, as though operation of sharira.
This mithya experience is not opposed to one's own brahmatvam, its simply a mithya experience, the experiencer (who in reality is free from being experiencer) is in oneself brahman alone.
I am brahman.
I experiencer am brahman.
I experienced am brahman.
I shakti am brahman.
I manifestation am brahman.
I laws manifest as am brahman.
I various shariras am brahman.
I various beings am brahman.
I chidabhasa am brahman.