Each creature gets +1/+1 for each other creature on the battlefield that shares at least one creature type with it. (For example, if two Goblin Warriors and a Goblin Shaman are on the battlefield, each gets +2/+2.)
Near Mint - $21.100
Lightly Played - $16.900
Moderately Played - $14.800
Heavily Played - $12.700
Damaged - $10.600
Near Mint Spanish - $21.100
Lightly Played Spanish - $16.900
Moderately Played Spanish - $14.800
Heavily Played Spanish - $12.700
Damaged Spanish - $10.600
Foil Prices
Near Mint Foil - $34.900
Lightly Played Foil - $27.900
Moderately Played Foil - $24.400
Heavily Played Foil - $20.900
Damaged Foil - $17.500
Near Mint Foil Spanish - $34.900
Lightly Played Foil Spanish - $27.900
Moderately Played Foil Spanish - $24.400
Heavily Played Foil Spanish - $20.900
Damaged Foil Spanish - $17.500