Simosiwak Shrine is located in the sky above Korok Forest, on Bravery Island in the North Hyrule Sky Archipelago.
Shrine Location
Simosiwak Shrine is located at 0163, 1972, 0759 in the sky above Korok Forest, on Bravery Island in the North Hyrule Sky Archipelago.
Proving Grounds: Lights Out
Take the weapons from near the entrance. There is also a wooden stick and a shield to the left of the entrance. You can hold up a Light Shield to shine light ahead of you, but be aware that it will take damage while you hold it up. There is a Construct that has a flame emitter on its weapon, and if it spins its weapon around, it will also damage any other Constructs nearby, so you can try to use that to your advantage. You can attach the rubies from the platform on the right to a weapon to make your weapon shoot fireballs when you use it. There is also a flame emitter in one corner that you can fuse to a weapon or shield.
After you defeat all the Constructs, the gate opens. Go through and open the chest to get a Bright Elixir. Then check on the dragon ring to get a Light of Blessing and complete the shrine.