Witness Protection is a common Enchantment — Aura card from Foundations (FDN), collector number 168. Current market price: $0.28 (foil $0.29), TCGplayer market prices via Scryfall.
Enchant creature Enchanted creature loses all abilities and is a green and white Citizen creature with base power and toughness 1/1 named Legitimate Businessperson. (It loses all other colors, card types, creature types, and names.)