Excellence, Extreme Devil, Zhuo Yue Yan Huang Earrings: Blackbird Earrings, Falling Land, Colorful Rock Island: Blackbird with Black Wings (or Yan Huang Earrings).
Personally, I think it would be better if you can find 1 or two people to brush your heart with you. Not only can you save the desert key, but it is also very fast. A few people brush it every 3-4 minutes, which is very fast, while the frequency of blackbirds is a little slow, and they have to use the desert key to open the box! Now a desert key in our area is close to 2 silver, so it is quick to brush away the hole and save money! !