Nunc almost always modifies a verb.
I haven't found any instances yet where nunc modifies a noun to mean "now being...". For that meaning, you could use a relative clause or put in an esse for nunc to modify.
From Cicero's Epistulae ad Familiārēs 10.31.6:
...constitui, ut nunc est, cum exercitu proficisci.
...I have decided, with the way things are now, to set out with my army.
And from his Dē Ōrātore 1.187:
Omnia fere, quae sunt conclusa nunc artibus, dispersa et dissipata quondam fuerunt...
Pretty much all the things which are now incorporated into the arts had previously been separate and disconnected...
There are some cases when nunc modifies a noun. For example, nunc [noun] nunc [noun] is an idiom when you give only a few examples from a longer list. "The Helvetii swept through Gaul, destroying the forces of the other tribes: now the Sequani, now the Aedui." But I don't think this is your intent.