Mezza Lo Shrine

The, designated by the Trial name Ancient Trifecta, is an BotW: in.

Entrance to the Shrine
Mezza Lo Shrine is initially buried beneath the ground of BotW:. When BotW: first arrives in the area, he will find BotW:, who will share that he knows an ancient song pertaining to their location. The song describes mounting a beast with a bone crown atop its throne in order to reveal an BotW:. Kass believes that "the lush green" refers to the plain, but he's unsure what animal wears a "crown of bone". Listening to him initiates the BotW: "BotW:".

To complete the Quest, Link must ride a BotW:, which can be found at the pond nearby, onto the pedestal. Mounting these deer requires a high level of BotW:, as they'll run away if they spot Link nearby. Once this is done, the Shrine will emerge from the ground.

As Link enters Mezza Lo Shrine, he's greeted by its BotW:, BotW:, who introduces the Trial.

Themes and Navigation
This Shrine contains a crystal switch located up a ramp to the right from where you enter. When struck, this crystal rotates a platform in the center of the room clockwise through four positions. The area on the left has a treasure chest, the area on the opposite side has a floor switch which activates the door to Mezza Lo, and the area on the right is where the Monk is located.

In order to reach the Monk, the switch at the north end of the room must be pressed down. This can be done by using BotW: and grabbing the treasure chest that is on the left side, and placing it onto the switch.

As with many shrines in Breath of the Wild, there are numerous solutions to this puzzle, although it can be a bit tricky. Note that the laser in the room is being blocked by a large metallic block. If this block is moved, the laser will hit the crystal switch, rotating the platform. Link can use BotW: on the laser statue to temporary freeze it, which will cause the laser to strike the crystal when it unfreezes.

Link can also uses Magnesis to control the large block and move it between the laser and the crystal, and then drop it, causing the laser to strike the switch again. Link can place a BotW: next to the crystal switch, so that when he is on the third platform opposite, Link can detonate this to activate the crystal switch.

When BotW: reaches Mezza Lo, he will be granted a BotW: for overcoming the Trial. He then wishes Link well before fading away.