Moment of Respite

When Moment of Respite enters the battlefield,
create two 0/2 white and green Elemental
creature tokens with defender.
{g/w}, Sacrifice a creature you control with
defender: Prevent all combat damage that would
be dealt this turn.
At the beginning of your end step, you gain 2 life.
Then, if you control no creatures with defender,
sacrifice Moment of Respite.