Brass, Time Shifter

When Brass, Time Shifter enters the battlefield,
create a colorless Timepiece artifact token with
"{1}{w}{t} : Exile the top card of your library.
{1}{b}{t} : Exile target card in your graveyard."
{w}{u}{t} : Exile a card in your hand. Draw 1 card.
You may cast nonland cards exiled with Brass or
the Timepiece.