Ita Exedes L Eresiarca [updated] -

After cross-referencing 14th-century anti-heretical writings (particularly those against the Fraticelli ), one plausible original reads:

The keyword appears to be a fragmented or stylized phrase, likely drawing from Latin and Italian roots related to religious history and authority. While not a standard modern idiom, its components point toward the concept of the Heresiarch —the founder or leader of a heretical movement. The Etymology of the Heresiarch ita exedes l eresiarca

Or with a pronoun: "Ita exedes illum, haeresiarcha." ita exedes l eresiarca

The Directorium Inquisitorum (Nicholas Eymerich, 1376) uses vivid language about "devouring" heresy from within the Church. The verb exedo is rare in Classical Latin but reappears in Medieval texts to describe corrosion, consumption, and internal decay—perfect for describing how heretics corrupt the faithful. ita exedes l eresiarca