Demonic Consultation is an instant, so on your upkeep (right before your draw step) and cast it and name a card you don't have in the deck
Despite that, I still love Rootpath Purifier for the potential it represents
While simplicity can be a great tool, not every card or situation needs to be simple
Then if you decide to turn it face-up at some point in that turn, it will meet its doom: upon the nearest SBA check, Rattleclaw Mystic will go into your graveyard
Design-wise they're whimiscal, straight out of a children's storybook with a clam as the main part of the face and the 'mouth', with goggle-eyes and a humanoid body glued onto it
Crypt Incursion Crypt Incursion can be dicey since it relies on your opponents having creatures in the graveyard, but you only need to hit three or four creatures for this black instant to be a worthwhile investment, plus you get some incidental graveyard hate