Keys

The keys were forged during the Era of the Sky by the ancient Dragon Master tribe.

Chain key and lock
The Chain key and lock were only used by Dodge to chain up MrSmartguy. Little is known about this key other than it is very powerful.

Omega Key
This key is used to open up the Black Door below Hyrule Castle. It allows for the disposal of Echoes like Dodge.

Matchstick Key
This key can set flame to anything. If stabbed into someone, then that person will combust.

Anywhere key
This key can take you anywhere, as long as you have a clear picture of it in your head.

Head key
This key can open one's "head," allowing access to that person's thoughts and memories.