Salvador, Haunted Prodigy

Whenever a creature enters a graveyard you may
pay one life. If you do, create a 1/1 Spirit token creature with "this creature cannot attack or block" and "when this creature dies deal 1 damage to any target." Whenever you draw your second card on your turn, non-token Spirits you control gain +1/+1.

{ut}, Sacrifice a creature, gain 1 life.