This card is -the- answer to Anathemancer. Pithing Needle is already a 40 or 50 dollar set and doesn't stop but 50% of the new Price of Progress. Runed Halo is going to become a must-play with the rise of R/B decks catalyzed by Anathemancer. It also stops Banefire, Demigod (which is poised for a resurgance), and anything else that might ail you.
Target: $35/set (Just over 8 a piece) by Mid-June. Potentially as soon as Regionals results come in. Should be a staple until a better answer to Anathemancer shows up (M10 or Zendikar).