The Painted Lady

When The Painted Lady enters the battlefield, if
you cast it from your hand, exile it and create a
2/3 white and blue legendary Human Wizard creature token named Painted Lady with "When
this creature leaves the battlefield, return target
creature named The Painted Lady from exile to the battlefield. You gain 1 life for each creature you
control."
When this creature leaves the battlefield, you
gain 3 life for each creature you control.