Bleeding Nectar

Convoke
If a friendly creature were to be destroyed this
turn, you may play this card. You gain life equal
to the toughness of the destroyed creature. This
card can only be played at Night. If this card's
cost was paid for by convoke, shuffle this card
into your library.
Death happens. It's part of life. Moon Nectar can be
and has been used to stave off death, however,
allowing a second chance at life. This is due to the
Nectar being the blood and tears of the Goddess'.