Your search for "Skirk Prospector 2414" revealed the following:
Skirk Prospector (Foil) (ONS) from Onslaught, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Doug Chaffee Card Text:Sacrifice a Goblin: Add R to your mana pool.
Skirk Prospector - Goblin Storm (Foil) (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Wizard of Barge Card Text: Secret Lair Commander Deck: Goblin StormSacrifice a Goblin: Add R.