Where to find these spells?

[ganjatron]

I found Resurrection for sale by one of the brothers on the NW-most Island in Western Islands - that is after I finished their quest. I saw Invisibility once but couldn't buy it due to too many scrolls... I think it was indeed the moon ghost ship, because it disappeared when I zoned and now I can seem to find the spell again.

What I'm really interested in is Weakness. I don't have one "mass" spell yet and I'm a mage that has invested in level3 Chaos magic, so that would be great.

Oh, my favorite spell thus far is "Demon Gate" and I found it, luckily, in a chest behind a house in the "demon-infested" village (ironic, but is this a static placement?) in the area where the Dwarf King lives.