Goblin Tutor is a uncommon Instant card from Unsanctioned (UND), collector number 53. Current market price: $0.50, TCGplayer market prices via Scryfall.
Roll a six-sided die. If you roll a 1, Goblin Tutor has no effect. Otherwise, search your library for the indicated card, reveal it, put it into your hand, then shuffle. 2 — A card named Goblin Tutor 3 — An enchantment 4 — An artifact 5 — A creature 6 — An instant or sorcery