Luna tome concept

Welp IntSys clearly didn't like me asking for Ghespenst Canas all the time, but instead of cursing the darkness I've elected to light a candle. Luna tome is very infamous in FE7 and for very good reason, it's even been suggested as a legendary weapon for whenever Canas got added, so now it could be a new legendary weapon for a future refinery update.
Basic effect is simple as a 1-2-3, opponent loses 6 res in combat with Canas. I like the idea of Combat debuffs and really wanna see them more explored after how unqiue and cool Loptous was. Refine effect can basically be whatever; Atk Res Bond (not a specific weapon or move type bond, just a normal bond) or an Owl effect probably being the most probable and effective. Really I think those restrictive bond effects can just stop being added at this point and we start getting less gimmicky effects but that's just me apparently.
Another idea is the debuff becomes the refine effect and the base effect is Slaying. Helps his damage output and it is accurate to the tome