Goblin Recruiter

When Goblin Recruiter enters, search your library for any number of Goblin cards, reveal them, then shuffle and put those cards on top in any order.

Mystery Booster 2

Secret Lair Drop

Classic Sixth Edition

When Goblin Recruiter comes into play, search your library for any number of Goblin cards you choose. Reveal those cards, then shuffle your library and put them on top of it in any order you choose.

Anthologies

You can search for any card with the creature type Goblin, including creature or kindred cards. Older cards of type "Summon Goblin" and "Summon Goblins" also count. You can't search for cards that have Goblin in the name but don't have the creature type Goblin.