The Poem-Parsing Traveler
The quest is unlocked after completing The Future of Hyrule scenario.
"A traveler is struggling to decode this ancient Rito verse: "The heart shines upon a path not whole, but a warming flame can stir its soul." Revali decides to bring the poem's meaning to light..."
"By loosing an arrow through the fire Revali had made, the traveler solved the riddle and received a tome on the art of archery. This he gave to Revali, and set out for his next adventure."
- Revali: Enhanced Ability