τίς γὰρ ἂν ᾠήθη ταῦτα γενέσθαι; (for who would have expected these things to happen?)
The sentence seems wrong me, ᾠήθη is in the passive, for the translation to be correct, it should have been ᾤετο instead. I don’t see what I am missing. As it seems now the sentence seems to mean “For who would have been expected these things happen?” which doesn’t make sense.