I implore you, grant me the power.


Civis Illustris
I don't think so. I think if I had said that the subject was an implied tu, it might be misinterpreted (i.e. that "implied tu" means das rather than tu das, and tu (nom.) da doesn't make any sense). But then again, das doesn't bear the same force as da (and there's an "s" on the end).
I don't understand, but I think that saying da has no subject is more confusing, because it does.

Ignis Umbra

Ignis Aeternus
I think ultimately my thought process is that whenever I think of a verb having a subject, that verb is usually either indicative or subjunctive.