Goblin Ringleader is a uncommon Creature — Goblin card from Core Set 2020 (M20), collector number 143. Current market price: $0.63 (foil $2.03), TCGplayer market prices via Scryfall.
Haste (This creature can attack and {T} as soon as it comes under your control.) When this creature enters, reveal the top four cards of your library. Put all Goblin cards revealed this way into your hand and the rest on the bottom of your library in any order.