Phelddagrif is on the Reserved List. It's an extremely strong Commander, and it combos with all sorts of cards. Triggering card draw, life gain, and creature creation for your opponents is a very unique and powerful ability, especially in multiplayer games where politics in king. This is better than it looks when tensions are high and negotiations are constant.
This will be $6 apiece in short order, after spiking to $15. I see $10-$12 as a likely long-term plateau for Phelddagrif.