Growing Vengeance

At the beginning of your end step, put a
vengeance counter on Growing Vengeance if you
lost life this turn
At the beginning of your upkeep, Growing
Vengeance deals damage to target creature equal
to the number of vengeance counters on it
{2}{b}{r}: Growing Vengeance deals damage to
target player equal to the number of vengeance counters on it