As you defeat Lucas with the help of Champion Roark, you go to fight the reason that Lucas tried to fight the Pokemon that Lucas claimed to be god. As you walk up to the Renegade Pokemon, it's clear that Arceus doesn't remember creating anything. But, it doesn't take kindly to creatures from the Mortal world, so it attacks you. What do you even do, Cyrus? Professor Dawn and Rowan are ready to fight Team Multiversal. And so is Arceus with you.