Anzrag's Rampage is a rare Sorcery card from Murders at Karlov Manor (MKM), collector number 303. Current market price: $0.28 (foil $0.46), TCGplayer market prices via Scryfall.
Destroy all artifacts you don't control, then exile the top X cards of your library, where X is the number of artifacts that were put into graveyards from the battlefield this turn. You may put a creature card exiled this way onto the battlefield. It gains haste. Return it to your hand at the beginning of the next end step.