imperative and intransitive

I’m translating two poems into English and I have two questions — hopefully someone will be able to help me with them…

First, I needed to know whether I can simply use “See!” as a sentence (imperative). I tried to do my own research, but it’s hard to google this because google does not read punctuation. I know I can say “Look!” or “See??”, but could I say “See!” in English? (In Portuguese we can say that even though the correspondent verb is transitive).

Second, I needed to know if I could use the verb ‘defeat’ as intransitive even though it is transitive. I need to say something along the lines of “the light that kills” (a luz que mata) but it hardly sounds poetic like that and I managed to work around the rest of the poem so as it would rhyme with “defeats” (light that defeats). Does that sound alien to native ears? I usually have a good ear for matters related to the English language, but, when it comes to poetry, it is hard for me to draw the line because so much of what I read in poetry sounds weird to me anyway (in Engl or Port)… Can anyone help me with that?