https://www.youworkforthem.com/font/T6460/zelo

Zelo is dazzlingly beautiful, soft, expressive font based on historical Slavic lettering. However, Zelo`s structure is so harmonious that it's majestic and fresh when typing in any other language as well. Zelo contains 850+ glyphs, many OpenType features including contextual alternates, localized forms, historical forms, fractions, old style numerals, and of course ligatures (standard and discretionary), manual kerning, and others. The core of Zelo type is it's OpenType contextual alternates features. Each letter has up to 5 alternatives, sometimes significantly different from each other. The OpenType coded conditions analyze numerous conditions of the surrounding text and replace a specific letter to alternative that is most suitable in a particular situation.