Does the new one also protect againts the behodler anti-magic ray ?
But that's mostly due to the fact SCS beholders are cheesy with their antimagic ray.
That being said, the problem imo is that BG version of beholder's anti-magic ray is extremely overpowered. It has all the advantages and none of the disadvantages of its PnP version (beholder can't use all of their frontal rays as long as the anti-magic one is used). I already discussed this with DavidW and I'll see if I can implement an optional component or a mini-mod to nerf the ray without creating issues with SCSII AI.
Saving throws penality
If you add Greater Malision to the business, level 20+ character have a 50% chance to be affected.
Regarding Greater Malison it has been nerfed to cause -2 penalty as per PnP, IWD and BG1; instead of the overpowered -4. I'll post a topic on this matter because I fear many players don't understand how powerful this spell was in its BG2 version.
You made it the ultimate debuffing spell, making other protections removal spells not worth it once you've access to it, and making it so that any enemy spell caster affected by it dead the round that follows.
When playing with SCS, It's already one of the few spells I'd memorize early (With time stop and improved alacrity) since the most dangerous foes are spell casters.
Anyway vanilla's version of this spell was really too weak for a 9th level spell and something had to be done. My latest suggestion was to add a Remove Magic-like feature (which I think was present in PnP).