Zes, Haunter of Nightmares

Afterlife 4 (When this creature dies, create two 1/1
white and black Spirit creature tokens with flying)

Whenever a creature you control dies, create a
1/1 white and black spirit creature token with
flying.
{w}{w}{w}{b}{b}{b}: Until end of turn, if a creature
you control would die, return it to your hand.