Nezumi Graverobber is in the Devour for Power commander deck, but when entering him in the card db, only its original Kamigawai printing is available from the dropdown.

The commander version is stored separately as http://deckbox.org/mtg/Nighteyes%20the%20Desecrator .

This is one of a handful of flip cards and split cards that are not correctly stored in the database and need to be merged. I expect problems will also appear with the Innistrad dual-sided cards.