{{Itemlist|Charizardite Y|Found in the second room in the back of the base if the player's starter was {{p|Charmander}} (Purity Mode only)|display={{DL|Mega Stone|Charizardite Y}}}}
{{Itemlist|Charizardite Y|Found in the second room in the back of the base if the player's starter was {{p|Charmander}} (Purity Mode only)|display={{DL|Mega Stone|Charizardite Y}}}}
{{Itemlist|Blastoisinite|Found in the second room in the back of the base if the player's starter was {{p|Squirtle}} (Purity Mode only)|display={{DL|Mega Stone|Blastoisinite}}}}
{{Itemlist|Blastoisinite|Found in the second room in the back of the base if the player's starter was {{p|Squirtle}} (Purity Mode only)|display={{DL|Mega Stone|Blastoisinite}}}}
{{Itemlist|Laboratory Key|Found hidden in one of the diaries stored in the locked door.|display={{BLink|Laboratory Key}}}}
As the player explores further into the base they come across Damian, who is standing behind Taen. Attempting to talk to Damian causes a scene to play where Reukra explains his cult's ideals and the fact that they're researching Mega Evolution.
Assist Reukra by battling Taen.
After defeating Taen, listen to Reukra talk for a bit longer before heading up, picking up the Mega Stone matching the player's starter Pokémon and then entering the Jade Tower through the fan in the room at the end of the hallway.