Where does “egni” come from?

egni (Latin) comes from Hungarian ég, from Proto-Finno-Ugric äŋɜ- — fire; to burn.

Ancestry of “egni”, step by step

Step	Language	Word	Meaning
1	Hungarian	ég	sky; heaven; heaven as a replacement for God
2	Proto-Finno-Ugric	äŋɜ-	fire; to burn