When Surprise Party enters the battlefield, yell “Surprise!” and put onto the battlefield any number of printed Clown Robot tokens that aren't touching each other, that you hid on the battlefield before you cast Surprise Party, and that weren't spotted by an opponent before you cast Surprise Party.
NM-Mint Foil - $1.00
Lightly Played Foil - $0.90
Moderately Played Foil - $0.80
Heavily Played Foil - $0.70
Damaged Foil - $0.50
NM-Mint Foil Non English - $1.00
Lightly Played Foil Non English - $0.90
Moderately Played Foil Non English - $0.80
Heavily Played Foil Non English - $0.70
Damaged Foil Non English - $0.50