Zephyrus, Sangheili's Hand

Flash, First Strike, Vigilance
When Zephyrus, Sangheili's Hand enters the battlefield have it fight target creature an
opponent controls
If an Ouroboros Agent card left the
battlefield the turn Zephyrus, Sangheili's Hand
was cast, then Zephyrus Sangheili's Hand gains
Double Strike and Haste until end of turn