Perception Bobblehead (Serial Numbered) - Universes Beyond: Fallout (PIP)

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.