Where does “художьникъ” come from?

художьникъ (Old East Slavic) comes from Old East Slavic худогъ, from Proto-Slavic xǫdogъ, from Proto-Germanic handugaz, from Proto-Germanic -gaz, from Proto-Indo-European -ḱos — -y, -ic.

Ancestry of “художьникъ”, step by step

StepLanguageWordMeaning
1Old East Slavicхудогъ—
2Proto-Slavicxǫdogъhandy, dextrous
3Proto-Germanichandugazhandy; skillful with the hands; dextrous
4Proto-Germanic-gaz-y
5Proto-Indo-European-ḱos-y, -ic
Every word from Proto-Indo-European -ḱos →Every word from Proto-Germanic -gaz →Every word from Proto-Germanic handugaz →