Invisibility to Undead (Wizard)

[doormat00]

Did this spell stop dropping?

I do not remember it being so rare on live.

[Rygar]

Where are you hunting for it? I see a comment in the wiki:
Velious Drop: Can drop from Holgresh in Eastern Wastes & Wakening Lands
No idea if that is classic or p99 quirk.

[Pringles]

Mobs around the level that you can learn the spell is your best bet I've found to pursue when dealing with Velious spells.