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 - $15.200
Lightly Played - $12.100
Moderately Played - $10.600
Heavily Played - $9.100
Damaged - $7.600
Near Mint Spanish - $15.200
Lightly Played Spanish - $12.100
Moderately Played Spanish - $10.600
Heavily Played Spanish - $9.100
Damaged Spanish - $7.600
Foil Prices
Near Mint Foil - $28.500
Lightly Played Foil - $22.800
Moderately Played Foil - $20.000
Heavily Played Foil - $17.100
Damaged Foil - $14.300
Near Mint Foil Spanish - $28.500
Lightly Played Foil Spanish - $22.800
Moderately Played Foil Spanish - $20.000
Heavily Played Foil Spanish - $17.100
Damaged Foil Spanish - $14.300