Osprey, The Turning Cog

Whenever you cast a Colorless spell Osprey gains Indestructible until the end of turn
Whenever you cast a Blue spell Osprey gains ward {3} until the end of turn
Whenever you cast a Red spell Osprey gains First Strike until the end of turn
Whenever you cast a White spell Osprey gains Vigilance until the end of turn

{t}: Active only if Osprey has Indestructible, ward {3}, First Strike, and Vigilance. Exile her then return her to the battlefield transformed