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.)
"Is that your coat of arms? Looks more like a shawl of branches to me!"
—Andreas the Imprudent, last words
Near Mint - $19.400
Lightly Played - $15.500
Moderately Played - $13.600
Heavily Played - $11.700
Damaged - $9.700
Near Mint Spanish - $19.400
Lightly Played Spanish - $15.500
Moderately Played Spanish - $13.600
Heavily Played Spanish - $11.700
Damaged Spanish - $9.700