Perception Bobblehead

Mana cost: {3}

Artifact — Bobblehead

{T}: Add one mana of any color. {3}, {T}: Look at the top X cards of your library, where X is the number of Bobbleheads you control. You may cast a spell with mana value 3 or less from among them without paying its mana cost. Put the rest on the bottom of your library in a random order.