at the beginning of your end step, if you gained life this turn, each opponent loses 1 life.
at the beginning of your end step, if you gained and lost life this turn, create a 1/1 black bat creature token with flying.
1b, pay 2 life: draw a card.
at the beginning of your end step, if you gained and lost life this turn, create a 1/1 black bat creature token with flying.
1b, pay 2 life: draw a card.