Anzrag's Rampage (Promo Pack) [Murders at Karlov Manor Promos]

Cost: 3 R R 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.