Here's something we didn't explicitly mention in Asteria although it should be obvious to anyone practically involved in occult affairs who also studies astrology. It should be of no surprise each planet feels differently when transiting different zodiac signs.
By extension, its spirits, when called upon in ritual, manifest differently depending on the sign the planet is transiting at the time. We've discussed this from a different perspective in Asteria in the section on natal chart and I also addressed it from the same perspective in Words. It also applies to other spirits of forces found inside the zodiac chart, such as spirits of the signs, but in this case it has to do with sign placements or lack of (among other things).