Aaron, the True Prophet

Vigilance, Shroud, Reach
Aaron, the True Prophet
enters the battlefield face down.
{2}{w} True Prophecy: Whenever you cast a spell,
you can duplicate the effect and select
new targets. (Whenever you use True Prophecy,
you receive 1 true counters.
When you get 3, you may reveal the card which doubles the effect of True Prophecy.)