Astros' Anemancer

Vigilance
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
At the beginning of your end step, if you gained
life this turn, until your next turn, target creature
gains protection from the colour of your choice.
{2}{w}, {t}: Exile target creature until Astros'
Anemancer leaves the battlefield.