“Neviim, Urim Vetumim, Chalomos, Psok Li Psukecha, Goralos”
Notice – all these were done with the highest level of Torah or sort of NeVuah. The words of G-D i.e. Torah or Neviim Kesuvim. I never heard one opening even a Gemorah.
“Goralos” if you are referring to Goral Ha’Gra that is done with a Chumash as well…