Yoda, Forsaken Master

Sensing (Whenever this creature becomes tapped or untapped, you get {e}. This triggers only once per turn.)
Whenever another nontoken creature enters the battlefield under your control, you may pay {e}. If you do, put a +1/+1 counter on that
creature and scry 2.
{g}{w/u}, {t}: Untap another target creature you
control. If it has counters on it, draw a card.