Sophia, Dogged Detective is a mythic Legendary Creature — Human Detective card from Murders at Karlov Manor Commander (MKC), collector number 319. Current market price: $0.47 (foil $0.45), TCGplayer market prices via Scryfall.
When Sophia enters, create Tiny, a legendary 2/2 green Dog Detective creature token with trample. {1}, Sacrifice an artifact token: Put a +1/+1 counter on each Dog you control. Whenever a Dog you control deals combat damage to a player, create a Food token, then investigate.