Servoverseer

(You can't cast this spell if an opponent control
a green permanent)
Flying, Vigilance, Protection from Green
When Servoverseer enters the battlefield, create
X 1/1 colorless Servo artifact creature tokens.
Servos you control have vigilance, and are white.
{4}{w}, {t}: Until end of turn, servos you control
gain flying and "{x}{w}, {t}: Prevent X damage to
any target. "