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.)
Near Mint - £12.10
Lightly Played - £10.30
Moderately Played - £8.50
Heavily Played - £6.10
Damaged - £3.70
Near Mint Non English - £12.10
Lightly Played Non English - £10.30
Moderately Played Non English - £8.50
Heavily Played Non English - £6.10
Damaged Non English - £3.70