Otherworldly Escort is a rare Creature — Human Detective card from Murders at Karlov Manor Commander (MKC), collector number 323. Current market price: $0.19, TCGplayer market prices via Scryfall.
Flash When this creature dies, if it's not a Spirit, return it to the battlefield under its owner's control with four charge counters on it. It's a Spirit Detective. (It's no longer a Human.) {1}{W}, {T}, Remove a charge counter from this creature: Destroy target creature that dealt damage to you this turn.