Crystalline staff should probably have command staff.

[FlarePusher]

I mean, I know now that I should've probably changed the staff type before morphing it, but seriously? Now the staff is locked to blight on my alchemist, and will just be trashed.

[ghostbuster]

This is probably a bug. The staff is supposed to be arcane damage and I am pretty sure it is really supposed not to be mutable. (and the code explicitely removes command staff)
But blight....

[Doctornull]

Yeah. If the staff could be commanded, OR it were just set to Arcane before the transformation bonus were applied, then it would be useful to somebody at least.

I got burned too when I first used the Crystal Focus on a staff. Either document that it'll grant some Arcane bonuses, or just do the smart thing and make the target staff Arcane before transforming it.

[HousePet]

Okay, I'll make it change the staff to arcane.

[minmay]

Have you tried setting the staff to arcane before transforming it? It's the worst possible thing to do. You end up holding a dragonbone staff with a 10% damage bonus; it overwrites it instead of increasing it. This could be considered a bug, but currently, telling people to command the staff to arcane is very harmful advice.

[Doctornull]

it overwrites it instead of increasing it. This could be considered a bug

That's awful.

Yeah, sounds like a bug.