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.)
"Hup, two, three, four,
Dunno how to count no more."
Near Mint - $20.700
Lightly Played - $16.600
Moderately Played - $14.500
Heavily Played - $12.500
Damaged - $10.400
Near Mint Spanish - $20.700
Lightly Played Spanish - $16.600
Moderately Played Spanish - $14.500
Heavily Played Spanish - $12.500
Damaged Spanish - $10.400
Foil Prices
Near Mint Foil - $55.900
Lightly Played Foil - $44.800
Moderately Played Foil - $39.200
Heavily Played Foil - $33.600
Damaged Foil - $28.000
Near Mint Foil Spanish - $55.900
Lightly Played Foil Spanish - $44.800
Moderately Played Foil Spanish - $39.200
Heavily Played Foil Spanish - $33.600
Damaged Foil Spanish - $28.000