[Poruku]

Making them attackable would not be much of a nerf. Destroyable objects generally cost 6 momentum to remove for a melee character, and 3 for a ranged attacker. Perhaps if destroying the gem weakened the user meaningfully then it would make sense.

I still believe the only way to actually nerf these things would be to target the range or the momentum cost. Or at least place a significant drawback to increasing range so much and so easily.

I get that a nerf sounds rough when you consider what would be lost, comparing it to the current version. But keep in mind gem staves are leagues beyond all other options in terms of power, both in pvp and pve. It's important to compare it to other weapons, not just itself. 1m for a 5 range increase is just way too good. Yes resists can mess with you but that's true for anything that costs 1m, it's still a free bonus action in most cases.

Yes the staves don't benefit from spellbook, but they get other benefits in exchange such as two-hand and weapon parts. As for the parries, I believe those only happen in melee range(?).

Edit: Lastly I'd like to argue 3m would not render these staves unusable, I know I would still use them. They would become an artillery tool, allowing you to sit back and improve your range, casting spells safely without moving closer to the fray yourself. Essentially making them more suited to use when making a tactical position, especially in events and team battles. It would no longer be a spammable skill you just use all the time, you would need to carefully place it to cover the area you want. Just because you wouldn't use it every turn would not make it useless. It would fit the specific but still powerful niche of the artillery setup casting tool. It would obviously be less common in 1v1 pvp, but I think that's honestly warranted and just makes sense: it's an artillery tool. It makes sense to make it more suited to backliners and less versatile