Perception Bobblehead (Serial Numbered) [Fallout]

Set: Fallout Type: Artifact — Bobblehead Rarity: Uncommon Cost: {3} {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.