Urgent Necropsy is a mythic Instant card from Murders at Karlov Manor (MKM), collector number 240. Current market price: $0.27 (foil $0.32), TCGplayer market prices via Scryfall.
As an additional cost to cast this spell, collect evidence X, where X is the total mana value of the permanents this spell targets. Destroy up to one target artifact, up to one target creature, up to one target enchantment, and up to one target planeswalker.