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." —Mogg march
NM-Mint Foil - $24.50
NM-Mint Foil Non English - $24.50
Lightly Played Foil - $23.30
Lightly Played Foil Non English - $23.30
Moderately Played Foil - $22.10
Moderately Played Foil Non English - $22.10
Heavily Played Foil - $19.60
Heavily Played Foil Non English - $19.60
Damaged Foil - $16.00
Damaged Foil Non English - $16.00