Increasing Confusion is a rare Sorcery card from Dark Ascension (DKA), collector number 41. Current market price: $0.93 (foil $5.65), TCGplayer market prices via Scryfall.
Target player mills X cards. If this spell was cast from a graveyard, that player mills twice that many cards instead. Flashback {X}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)