In Tiny Tina’s Wonderlands, you can interact with other NPCs who can have quests for you and in return, you get different rewards. But these side quests open after certain progress in the main campaign quests and require a recommended level for the quest.
You’ll unlock a side quest of Raela when you complete the main quest 5 of the campaign which will be the Emotion of the Ocean. After completing this you can go to Area Nocean where you’ll find Raela.
As you start the quest you need to find a scroll which will also be pointed on the map with a blue marker. Just go right from where you started the quest and just ahead from the wishing well, you’ll see the scroll. Grab the scroll and it’ll show you the exact location of the Legendary Bow.
Enter the Cave
Once you’ll pick up the scroll a cave will be marked on the map which will be straight ahead of where you found the scroll. Go near the cave and enter the cave.
As you teleported into the cave you have to clear the two encounters to get the bow. As you clear the first encounter a chest will appear which has weapons that you can take and just beside it another teleport will appear. Take the teleport and you’ll start a second encounter clear this encounter and you’ll find the legendary bow in a chest.
Go back to Raela
After getting the bow, take the teleport which will be beside the chest and you’ll get out of the cave you entered. Go to Raela and give her the Legendary Bow to finish the quest.
You’ll get 6482 XP and $4613 for completing this side quest.