Krenko's Buzzcrusher is a rare Artifact Creature — Insect Thopter card from Murders at Karlov Manor (MKM), collector number 136. Current market price: $0.23 (foil $0.34), TCGplayer market prices via Scryfall.
Flying, trample When this creature enters, for each player, destroy up to one nonbasic land that player controls. For each land destroyed this way, its controller may search their library for a basic land card, put it onto the battlefield tapped, then shuffle.