PrimeTV, Professor of Time

When PrimeTV becomes tapped or
untapped, he gets a lesson counter.
•Remove a counter: tap or untap target creature
•Remove three counters: Exile target permanent
or return target permanent you own to your hand.
•Remove five counters: Draw five cards or
each opponent mills five cards and loses 5 life.
Time is a vital tool of warriors, scholars, and students.
For the lazy, time is unending agony.