And good luck to you, for you are the last.

3 seconds sound clip from the The Last Unicorn movie soundboard.

You can hear this line at 00:02:04.262 in the Blu-ray version of the movie.

Quote context

[...]

- Why is it always spring here?

- I tell you there is one unicorn left in the world, and as long as it lives in this forest, we'll find no game to hunt here.

- Let's turn around, hunt somewhere else.

- All right.

- Stay where you are, poor beast! This is no world for you.

- Stay in your forest and keep your trees green and your friends protected.

- And good luck to you, for you are the last.

- I am the only unicorn there is? The last?

- When the last eagle flies over the last crumbling mountain, and the last lion roars at the last dusty fountain...

- In the shadow of the forest, though she may be old and worn, they will stare, unbelieving, at the last unicorn...

- When the first breath of winter through the flowers is icing, and you look to the north, and a pale moon is rising...

[...]