Phenomenon Investigators is a rare Creature — Human Detective card from Duskmourn: House of Horror Commander (DSC), collector number 65. Current market price: $0.30, TCGplayer market prices via Scryfall.
As this creature enters, choose Believe or Doubt. • Believe — Whenever a nontoken creature you control dies, create a 2/2 black Horror enchantment creature token. • Doubt — At the beginning of your end step, you may return a nonland permanent you own to your hand. If you do, draw a card.