Neya, Azorius Falconer

Forecast - {3}{u}{w}, reveal Neya from your hand: Put a legendary 2/2 blue and white bird creature token with flying named Icewing onto the battlefield, then detain target creature you don't control. (Until your next turn, that creature can't attack or block and its activated abilities can't be activated. Activate this ability only during your upkeep
and only once each turn.)