Ask the question correctly my friend, I can think of at least four that can only be found in gold saucer:
Ramuh, the first chocobo race, getting out of coral prison.
W-summon, enough Battle points.
Final Attack, beating the special battle.
Pre-emptive, prize for the chocobo races.

I'm not exactly sure of pre-emptive, because you may be able to get something like sneak attack as well, and I almost know you can get enc up as a prize, but i've got at least one (i'd put money on Ramuh being the one you were looking for.)

Q: What is the only place you ever see cloud's father?