The recently revealed card Yahenni's Expertise states:
All creatures get -3/-3 until end of turn.
You may cast a card with converted mana cost 3 or less from your hand.
The situation is this: There is one 2/2 creature on the battlefield. I cast Yahenni's Expertise, then chose to cast Living End with the second effect. Will the 2/2 creature die from the Expertise before the Living End resolves? (and thus be brought back to play by Living End). Or will it die after the Living End finished resolving?