Christ Jesus taught to pray to the Father,
who is in Heaven.
The meaning of "to pray" is "to ask".
Asking (praying to) any other entity in Heaven to intercede is disobeying Christ,
and opening one to demonic activity.
Christ did not teach to ask other entities in Heaven to intercede.
He taught to pray directly to the Father.
Even the Saints in the Scriptures to whom angels from Heaven were sent,
did not themselves invoke those angels, ever.
The angels were sent by God.
God was deciding to whom He would have His angels speak.