The War Doctor

Legendary Creature — Time Lord Doctor

{2}{R}{W}

Whenever one or more other permanents phase out and whenever one or more other cards are put into exile from anywhere, put a time counter on The War Doctor. Whenever The War Doctor attacks, it deals damage equal to the number of time counters on it to any target. If a creature dealt damage this way would die this turn, exile it instead.

3/5

Rulings and every printing on Scryfall