They need to sort it out.

1. Until that is stated officially on the Rank Headquarters, that cannot be applied.

2. No ruling was made using specifically that basis. I'm the official judge.

3. It provides no advantage to Dazsos since it would also equally apply to Corban who would also potentially be capable of doing this, especially if I correctly recall his sword being sentient (in conjunction with other things).

It is not a fallacy that many of the higher tiers in the late mid to late 90s allowed exceptions to the singular prep. Those that participated in the competitive deathmatches (the ones where if you lost you were not supposed to use that character again anywhere or get shunned), often understood this even under the application of the original rules (many of those participating were people that had helped develop the original rules in various fashions). Again, you may not have seen this due to a different experience, but I have, and frequently.

[@Dazsos] You still aren't describing preps though really as applied to Eden Era. As Divinity correctly said those are still just quick casted spells. Preps are very specifically spells/abilities that you intentionally spend extra time powering them up. Even just inscribing a rune and leaving it in wait isn't necessarily a prep either. You actively have to be giving it increasing power and it is usually used to logically expand the bounds of what the spell normally behaves at without it.