Ian, Convalescent Charmer - Tasigur, the Golden Fang (SLD-1396) - Secret Lair Drop / Ian, Convalescent Charmer (Borderless)

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.)
{2}: Mill two cards, then return a nonland card of an opponent's choice from your graveyard to your hand.