" Good. So you may be dense, but you’re not an idiot.’
‘How can you even talk to me like that? Don’t you know I can summon zombies and skeletons and –’
‘Right now you couldn’t summon a wishbone without melting into a puddle of darkness, di Angelo,’ Will said. ‘I told you, no more Underworldy stuff, doctor’s orders. You owe me at least three days of rest in the infirmary. Starting now.’
Nico felt like a hundred skeletal butterflies were resurrecting in his stomach. ‘Three days? I – I suppose that would be okay. "

― Rick Riordan , The Blood of Olympus (The Heroes of Olympus, #5)