To become a Yiga Blademaster, you have to visit the Yiga Blademaster Station and complete the Yiga Clan Exam.
How to Start the Quest
Visit the Yiga Blademaster Station and talk to the Blademaster to begin this quest.
How to Complete the Quest
Go to each of the locations marked on the map, and make an offering of Mighty Bananas to each frog statue that you find. One frog statue is near the Blademaster Station. Go east from the door of the Blademaster station and go to the bridge, then float down below the bridge to find the frog statue. Drop a Mighty Banana into the offering bowl in front of it. Its location is -2353, -1812, 0091.
One frog statue is north of Gerudo Canyon Skyview Tower, at the bottom of the canyon. Its location is -2434, -2032, 0078.
One frog statue is southwest of Gerudo Canyon Skyview Tower, inside of Gerudo Canyon Mine. It is located at -2672, -2496, 0093.
One frog statue is southeast of Gerudo Canyon Skyview Tower, on top of Spectacle Rock. It is located at -2299, -2423, 0357. Beware of the Rare Stone Talus near this frog statue.
One frog statue is found near the east entrance of Mount Nabooru Cave, east of Gerudo Canyon Skyview Tower. It is located at -1835, -1943, 0041.
Quest Reward
After you have made an offering at all five frog statues, put on the Yiga armor set and go back into the Yiga Blademaster Station. Talk to the Blademaster to be permitted to go through the door behind him. This gives you access to the remaining features of the Yiga Blademaster Station cave.