Blessed Idol

The Blessed Idol serves as the Key to the Boss (Koloktos chamber in the Ancient Cistern dungeon in Skyward Sword

The key/idol resembles a meditating Buddha on one and a Lotus flower on the other. The Buddha part of the key is inserted into the Lock and the Lotus side faces towards Link as he turns the key, the lock itself is designed to look like a Lotus meaning that the idol and lock blend together seamlessly when the door is being opened. After the idol is used, Link is taken to the top of the Buddha statue's head where he uses the Whip to activate mechanisms that raise the Head and neck of the statue into the actual Boss chamber where Link once again encounters Ghirahim and ultimately fights Koloktos. This sequence of events is unusually spectacular within Zelda games, the scenario of Link being raised into the Boss chamber was very cinematic and unusual, Zelda games normally just have Link open a locked door and enter the room in order to challenge the Boss. Skyward Sword didn't use big keys as such, and used ornate objects which would have to be rotated by the player to the correct position and then inserted into the lock before a boss battle. This is a prime example of the Motion control of the Wii being used perfectly as Nintendo set out to do in the concept and development of ''Skyward Sword.