You can tap any two untapped white and/or blue creatures you control, including ones you haven't controlled continuously since the beginning of your most recent turn, to pay the cost of Sky Hussar's forecast ability.
Flying
When this creature enters, untap all creatures you control.
Forecast — Tap two untapped white and/or blue creatures you control, Reveal this card from your hand: Draw a card. (Activate only during your upkeep and only once each turn.)
