Buttercup, Provincial Princess gets +1/+1 for each color among other legendary permanents you control.
WUBRG: Search your library for a legendary permanent card with mana value less than Buttercup's power, put that card onto the battlefield, then shuffle.
Near Mint - $32.00
Lightly Played - $30.50
Moderately Played - $25.75
Heavily Played - $19.25
Damaged - $16.00
Near Mint Non-English - $32.00
Lightly Played Non-English - $30.50
Moderately Played Non-English - $25.75
Heavily Played Non-English - $19.25
Damaged Non-English - $16.00
Foil Prices
Near Mint Foil - $38.00
Lightly Played Foil - $36.25
Moderately Played Foil - $30.50
Heavily Played Foil - $23.00
Damaged Foil - $19.00
Near Mint Foil Non-English - $38.00
Lightly Played Foil Non-English - $36.25
Moderately Played Foil Non-English - $30.50
Heavily Played Foil Non-English - $23.00
Damaged Foil Non-English - $19.00