Today I'm adding my changes to the encounter with Lo-Pan... I mean Yugureda Shosaito in book 5. Most of the changes are encounter based as he is largely similar to his counterpart in the book but I did add some spells.
Nice take! I particularly like the lantern + shadow attack trick -- spooky and thematic.
Yes, Arc could. He found some clever uses of the spells he had prepared, and the spells the sorcerer Nuriko and oracle Amaya had on hand, and at one point the ninja Ebony Blossom used her ghost step ability to step through the the archway in the north wall that was not an actual portal to the Plane of Shadow to attach a mystic tether to Tarukimi's soul. I had to allow a lot of loose interpretions of side uses of spells, but the result was glorious roleplaying.