i think there should be an event similar to acquiring zin tkd R and bwn r but for any timed scroll for example say tim has rage bf le but its 30 day timed and john has dark haze bf le 30 day if tim and john fine (insert boss) and obtain (insert random piece of spirit (rainbow)) and (rebirth (embty)) and combine with a random timed 30day scroll they will be able to make that scroll perm i think this would be a good way to generate bm players