Odd Keystone

Use on the tower on Route 209 to encounter Spiritomb if you have at least 32 Underground greetings.

Place in the tower on Route 209. Check the stone to encounter a Spiritomb, as long as the trainer’s Underground status card counts at least 32 greetings.

A vital item that is needed to keep a stone tower from collapsing. Voices can be heard from it occasionally.