It's difficult to find antonyms for the word "repellencies" as it is a relatively uncommon word. However, one possible way to address this request is to explore synonyms and opposites of the root word "repellent".
"Repellent," as an adjective, means "causing an aversion, repulsive" or "resistant to something." Therefore, its antonym could be words such as appealing, alluring, or attractive. Meanwhile, as a noun, "repellent" can refer to a substance that repels insects, animals, or people. Its opposite or counterpart in this sense could be a lure, attractant, or pheromone.
While not perfect antonyms, these suggestions could help convey the opposite or contrasting meanings of "repellencies" in a specific context.