In this shape alone you have some hope of reaching King Haggard and finding out what has become of the other unicorns.
6 seconds sound clip from the The Last Unicorn movie soundboard.
You can hear this line at 00:48:50.154 in the Blu-ray version of the movie.
Quote context
[...]
- You see, I couldn't think of anything else I could do to save you.
- What have you done to me? I'm a unicorn! I'm a unicorn!
- Don't! Don't you hurt yourself!
- Be still! The magic knew what it was doing.
- I wish you had let the Red Bull take me. I wish you had left me to the harpy!
- I can feel this body dying all around me!
- But it's only for a little while, I promise you! Soon you'll have your true shape again, forever!
[...]