Rulings

• You may choose just the first mode (targeting a creature spell), just the second mode (targeting a creature card in your graveyard), or both modes (targeting a creature spell and a creature card in your graveyard). You can’t choose a mode unless there’s a legal target for it.2009-05-01
• If you choose both modes, you choose their targets at the same time. You can’t counter your own creature spell and then return that card from your graveyard to your hand.2009-05-01