ἀλλ' ἐσθ' ὁ θάνατος λοῖσθος ἰατρός κακῶν → but death is the ultimate healer of ills
one who dares: P. κινδυνευτής, ὁ, τολμητής, ὁ.
impudent impostor: use P. and V. ὑβριστής, ὁ.