Goblin creatures get +1/+1.
All Goblins are black and are Zombies in addition to their other creature types.
10/4/2004 The Goblins are both Goblins and Zombies and they are black (they lose their previous color(s)).
10/4/2004 This only affects Goblins which are on the battlefield. Ones in your graveyard, library, etc. are not changed to be black or to be Zombies.