What story is it, I'll answer when I know the story title.
Prospero has Ariel create absolute chaos on board the ship while Prospero conjures a storm with his magic. Ariel's devices have everyone running around like crazy and jumping off the boat as he sets fire to parts of it. He made sure though, that everyone was near enough to the shore and no one drowned, so that Prospero's plans for them on the island could be carried out.
It would be the third person pronoun. As you're speaking of him in the third person.
Can you give us background information so we can see how decadence is used in the passage