Fell Shepherd is a rare Creature — Avatar card from Commander 2013 (C13), collector number 78. Current market price: $0.21, TCGplayer market prices via Scryfall.
Whenever this creature deals combat damage to a player, you may return to your hand all creature cards that were put into your graveyard from the battlefield this turn. {B}, Sacrifice another creature: Target creature gets -2/-2 until end of turn.