Every distinct wording since 2010, newest first.
July 12, 2019 · Core Set 2020
Paying life is done by subtracting the indicated amount of life from a player’s life total. (Players can always pay 0 life.)
February 1, 2010 · Worldwake
Damage dealt to a planeswalker causes that many loyalty counters to be removed from that planeswalker.