Opras, Lord Commandant

Forecast — {2}{w}{u}, Reveal Opras, Lord
Commandant from your hand: detain target
nonland permanent an opponent controls. (Until
your next turn, that permanent can't attack or block
and its activated abilities can't be activated.)

Addendum — If you cast this spell during your
main phase, detain two target nonland permanents
an opponent controls and make two 0/3 Blue and
white Ice wall creature tokens with defender.