Staff of the Magi

{t}: Add one mana of any color to your mana pool.
{1}{t}: Gain 2 Life
{2}{t}: Target creature gains flying until end of turn.
{3}{t}: Draw 2 cards, then discard a card.
{4}{t}: Staff of the Magi deals 4 damage to target creature or player.
{x}{t}: Sacrifice Staff of the Magi. Exile all nonland permanents with converted mana cost X or less.