Cheapest priced copy (Lorwyn): $0.99 at Card Kingdom, near mint, their price list as of .
Boggart Harbinger 
Creature — Goblin Shaman · 2/1 · Uncommon · Lorwyn · #102
When this creature enters, you may search your library for a Goblin card, reveal it, then shuffle and put that card on top.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper