Diviner of Mist 20 (Commander: Tarkir: Dragonstorm)

Flying Whenever this creature attacks, mill four cards. You may cast an instant or sorcery spell from your graveyard with mana value 4 or less without paying its mana cost. If that spell would be put into your graveyard, exile it instead.

NM - $1.50
LP - $1.50
MP - $1.50
HP - $1.50
DMG - $1.50