Soaring Fright Shadowbeast

Flying
Nightbringer 1 (Reduce the total number of spells cast by one when determining day becomes night.)
Aggressive (At the beginning of each player’s upkeep , that player untaps this card and gains control of this card. It is goaded by its owner.)
Halted in Daylight — During the day, this creature cannot attack and gains shadow.

When Soaring Fright Shadowbeast attacks, target creature gains -2/-0 until end of turn.