Azorius Legionnaire

{t}: Draw a card and discard a card.
{u}{u}{1}: Exile the top card of your Library.
While Azorius Legionnaire is in play, you can
cast cards exiled by Azorius Legionnaire.
{w}{w}{1}: Detain target permanent. (Until your
next turn, that permanent can't attack or block
and its activated abilities can't be activated.)