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 - $16.100
Lightly Played - $12.900
Moderately Played - $11.300
Heavily Played - $9.700
Damaged - $8.100
Near Mint Spanish - $16.100
Lightly Played Spanish - $12.900
Moderately Played Spanish - $11.300
Heavily Played Spanish - $9.700
Damaged Spanish - $8.100
Foil Prices
Near Mint Foil - $28.100
Lightly Played Foil - $22.400
Moderately Played Foil - $19.600
Heavily Played Foil - $16.800
Damaged Foil - $14.000
Near Mint Foil Spanish - $28.100
Lightly Played Foil Spanish - $22.400
Moderately Played Foil Spanish - $19.600
Heavily Played Foil Spanish - $16.800
Damaged Foil Spanish - $14.000