Hyrule Warriors: Age of Calamity
During the Quest "Scouting the Training Ground", Sidon decides to host his Waterfall-climbing class at Lulu Lake, and he wants to inspect it without disturbing the Lynel on Ploymus Mountain nearby.[3] With Stealth-boosting Materials, Sidon confirms that the Lake is a good fit for his class, but he needs someone to defeat the Lynel beforehand.[9] In the Quest "Duel on Ploymus Mountain", Urbosa is tasked with clearing out the Lynel, which allows the Zora to move forward with their class.[10][11]
As part of the Quest "Training at Lulu Lake", Sidon is finally able to start his Waterfall-climbing class, but he needs speed-boosting Materials for his students.[12] Using the Materials, Sidon's students are able to master climbing Waterfalls, and their eager attitudes inspire him to work even harder with his own training.[13]