There was one charm in essence 6 which asked you to be solar tier sorcerer in Occult side, allowing opening one yozi charmset for you. But usually any solar who mastered it perished fast as yozis send their top tier akuma's (who sold their very souls to same power, as twisted irony) to slay said solars. Also it's overall was described to be discovery done by single sorcerer and perhaps two solars ever having it (and one discovery makers was zenith who had bloated it's body with mutations to point she could no longer use solar charms and was living in West and away from solar deliberate).<br/><br/>Even so, Autochton would not had trusted solar get anywhere near with SWILIH charms to try help him as very reason why he left was because of paranoia and his knowledge about Great Curse inflicted on all exalted host and so predicted the Usurpation centuries advance.