Sveti Sava 3 by Nikola Kovanovic is a free Cyrillic ornamental initials font with a manuscript feel. The letters sit inside square frames laced with circles, diagonals, and fine linear filigree, giving the font the look of illuminated monograms rather than ordinary display lettering.
It fits book covers, church and cultural posters, chapter openings, exhibition graphics, and title cards where a free font can bring that icon-like, historical mood quickly. Use it for short words, drop caps, or monogram-style marks, because the framed letters carry so much of the visual weight on their own.