Cateran Persuader is a common Creature — Human Mercenary card from Mercadian Masques (MMQ), collector number 124. Current market price: $0.30 (foil $2.21), TCGplayer market prices via Scryfall.
{1}, {T}: Search your library for a Mercenary permanent card with mana value 1 or less, put it onto the battlefield, then shuffle.