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 - $25.700
Lightly Played - $20.600
Moderately Played - $18.000
Heavily Played - $15.500
Damaged - $12.900
Near Mint Spanish - $25.700
Lightly Played Spanish - $20.600
Moderately Played Spanish - $18.000
Heavily Played Spanish - $15.500
Damaged Spanish - $12.900
Foil Prices
Near Mint Foil - $29.700
Lightly Played Foil - $23.800
Moderately Played Foil - $20.800
Heavily Played Foil - $17.900
Damaged Foil - $14.900
Near Mint Foil Spanish - $29.700
Lightly Played Foil Spanish - $23.800
Moderately Played Foil Spanish - $20.800
Heavily Played Foil Spanish - $17.900
Damaged Foil Spanish - $14.900