Eternal Reign

When Eternal Reign enters the battlefield, you
become the monarch and gain 5 life.
At the beginning of your upkeep, if you are the monarch, put a reign counter on Eternal Reign, it
then deals damage equal to the number of
counters on it to any target. You gain life equal
the damage dealt this way. If Eternal Reign has
seven or more reign counters on it, you win the
game.