Starpath Navigator

Whenever you cast a noncreature spell, scour.(Exile
the top card of your library. You may play it on any
turn you dealt combat damage to a player.)

{3}{u}, {t}: Put a +1/+1 counter on target creature
you control. It can't be blocked this turn. This
ability costs {1} less to activate for each scoured
card you own.

"When I first glimpsed the night sky, I saw beauty.
Now, I see knowledge."