Perception Bobblehead
From Fallout set
Perception Bobblehead
Artifact — Bobblehead
: Add one mana of any color.
, : 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.