Obviously,Stephen Colbert, one of the most vocal celebrityLord of the Ringsfans, brought up J.R.R.

Tolkiens world whenLiv Tylercame onThe Late ShowThursday night.

But it turned out she had a gift for him.

The Late Show with Stephen Colbert

Scott Kowalchyk/CBS

The actress, who can beseen currently in HulusHarlots, brought the prop sword she used as Arwen.

That gave Colbert an idea.

Would you indulge in a fantasy of mine?

the host asked after holding the sword in his hands.

Tyler did indulge him.

Colbert orchestrated a reenactment of Arwen and Frodos scene by the river as they faced the Ringwraiths.

Then, in a moment that earned a Whoo!

from Colbert, she uttered the elvish enchantment she used to summon a flood that swallowed the Nazgul.

We bet Colbert is pretty stoked about that.

Watch their reenactment in the clip above, starting at the 3:01 mark.