Jasmine, Distraught Priestess

Whenever a creature you control dies, gain 1 life.
When three or more creatures die during your
turn, target opponent loses 3 life, then put a
+1/+1 counter onto Jasmine.
{4}{w}, Sacrifice Jasmine: Creatures you control
gain Hexproof and Indestructible until end of
turn. Shuffle Jasmine into your library.