"Between heaven and earth, two divine powers rule: Luna Tenebris, who wraps souls in shadows, and Sol Regem, who commands eternal light. Where the dark night holds sway, there the pale moon reigns; where the day shines forth, there the golden sun wears its crown. Darkness and light are joined in eternal struggle, but neither can stand without the other."
Here’s a polished Latin-style text incorporating the phrases (Moon of Darkness / Dark Moon) and "Sol Regem" (Sun the King / King Sun): "Inter caelum et terram, duo numina regnant: Luna Tenebris, quae umbris animas involvit, et Sol Regem, qui lucem aeternam imperat. Ubi nox obscura tenet, ibi luna pallida regnat; ubi dies refulget, ibi sol aureus coronam gerit. Tenebrae et lux aeterno proelio iunguntur, sed neutrum sine altero stare potest." English translation: luna tenebris and sol regem