Ratcatcher is a rare Creature — Ogre Rogue card from Masters 25 (A25), collector number 103. Current market price: $12.14 (foil $14.23), TCGplayer market prices via Scryfall.
Fear (This creature can't be blocked except by artifact creatures and/or black creatures.) At the beginning of your upkeep, you may search your library for a Rat card, reveal it, put it into your hand, then shuffle.