Pokémon Mystery Dungeon: Blue Rescue Team Tips

Buried Relic Open
To get Buried Relic you must complete Stormy Sea, by beating Kyoger. The next day clean out your mailbox and wait another day. You will recieve a notice talking about a "New Discovery" which is Buried Relic. Then go talk to Shiftry in the Pokemon Square and he will unlock Buried Relic for you.