Complex sentence: Dumbledore names this effect as "Priori Incantatem", and acknowledges that even though Harry's parents appeared through Voldemort's wand, no spell can awaken the dead.
Split into simpler sentences: Dumbledore names this effect as "Priori Incantatem". Dumbledore acknowledges that even though Harry's parents appeared through Voldemort's wand, no spell can awaken the dead.