After you get a membership card to the Sweet Spot, you enter the rift to reach the Stilled Faron Wetlands.

Explore the Stilled Faron Wetlands

Go north, and defeat the Deku Babas. The path splits, and the easier path is on the east. Pull up the Deku Baba, then defeat the Goponga flower, then defeat the Deku Baba Lv. 2s down below. Open the chest to get 20 rupees.

To the north, go northwest and defeat the Electric Keese and learn the Electric Keese echo.

Keep going northwest to find a Drippitune. Defeat it to stop the rain. Then defeat the slimy monster and learn the Goo Specter echo. Then open the nearby chest to get 4 containers of fresh milk.

Go east to an island with an Electric Keese, and burn the spiderweb to reach a chest, which contains a golden egg.

Go north, past two dark Buzz Blobs, then go northeast and check on the waypoint to add it to your map.

Next, go north to the torches. Create a Drippitune echoto put out all the torches with the rain. Then go north down the ladder.

Defeat the dark Crawltula and go up. There is a spinning eye that will shoot a beam at you if it sees you. You can use a monster echo to hit it, making it stop. Defeat another dark Crawltula and go up to the top of the room, and go up the ladder there.

Bind to a Buzz Blob and make it electrify the crystal in the middle of the room, then bind to a Buzz Blob and jump up the platforms on the left so you can push a Buzz Blob up against the northwest crystal. Then jump up the platforms on the right and switch to the Buzz Blob echo and hold Y to create the echo on the other side of the fence around the northeast crystal. When all three crystals are glowing, the north door opens. Go through.

There will be a cutscene.

In the west part of this area, you can learn the Mothula Lv. 2 echo

There is a stone building near where you first came up from underground. Go in to enter Faron Temple.