It is an illusion cantrip so shadow magic wont apply as it is not a 1st level spell or above. Some spells will be difficult to translate without an actual DM I agree but these spells will be esoteric in nature and probably wont be in the spell list anyway. I hope some of the fun spell variants will be included. Spells that effect the environemt in an illusionary manner like "tiny hut" will be pretty cool I think but I think that is an evocation ritual.