I was messing around with a black splash list the other day and I am not completely sure the deck can support Seizes and Confidants without having to sacrifice the Trinket Mages/toolbox and CB/top combo. Even though you may think Confidant is really needed, we already run Standstills and if we run 8 draw spells we're bound to just draw more draw spells and not many business spells. I'd mainly only splash black right now for Seizes main and Extirpates from the board.