If a nether creature is Provoking, they’re listed as e.g. “Eubonus (Nature, Nether , provoking)”, with an erroneous space after the word “Nether”. The space isn’t there usually. I’ve seen this in multiple battles; in particular this is a Springtime Aspect from a minor sigil. I haven’t seen whether it also happens when they’re defending.
Mac Siralim, latest version.