Perception Bobblehead (Surge Foil) [Fallout] Yanggu or abilities requiring an activation

or abilities requiring an activation cost

Its owner puts it on the top or bottom of their library

creatures you control gain trample and get +X/+X until end of turn

the Tide Star

it deals 20 damage to any target

Perception Bobblehead (Surge Foil) [Fallout] Yanggu or abilities requiring an activationSet: 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.