Key Stone

Core series

• Despite being integral to the Mega Evolution phenomenon, little is known about the origin of Key Stones.
• In Pokémon Omega Ruby and Alpha Sapphire , Key Stones, along with Mega Stones , seem to have a strong connection to the meteoroids that rained down on the Hoenn region millenia ago. Matt and Professor Cozmo found a Key Stone and a Galladite , respectively, in Meteor Falls , an area known for having been struck by meteors in the distant past. [ 1 ] According to the lore passed down by the Draconids , as told by Zinnia at Sky Pillar , a huge, brilliant meteoroid that struck the planet 1,000 years ago, creating the crater where currently lies Sootopolis City , allowed for Rayquaza to respond to the people's wishes for salvation during a time of desperate need and undergo the world's first-ever Mega Evolution—in this sense, the meteoroid acted as a Key Stone. Maxie OR / Archie AS also considers the possibility of altering the Meteorite's qualities to those of a Key or Mega Stone.
• Unlike Mega Stones, Key Stones have not been associated with the firing of the ultimate weapon in Kalos . An old legend associated with the Tower of Mastery speaks of a Trainer and Lucario finding the first known Key Stone and Mega Stone in the area. [ 2 ]
• According to a loading screen text in Pokémon Legends: Z-A , Key Stones work by amplifying the bonds between Trainer and Pokémon, enabling them to channel the power of Mega Evolution.