I crew a Vehicle to block. Once it's a creature, I cast Supernatural Stamina, targeting the Vehicle. Text for Supernatural Stamina:
Until end of turn, target creature gets +2/+0 and gains "Whenever this creature dies, return it to the battlefield tapped under its owner's control."
If my Vehicle dies, does it return to the battlefield because it met its trigger by dying, or does it remain in the graveyard because the effect checks for a creature, and it's an artifact in the graveyard? If it does return, does it return as a creature until end of turn, or as an uncrewed vehicle?