Circle of death and its partner in crime undeath to death. You have a set radius of 40 feet burst affecting a variable number of HD in creatures, but not any with 10 or more HD. You're not likely to get the full effect even when you first start casting it, and to add insult to injury it costs money. Cloudkill is free. If you have that many creatures with that few HD to kill, you might as well use an area blast.

Weird is another one. It's mind affecting and fear as a 9th, when immunity abounds. Just like phantasmal killer it's will negates, then fortitude partial. I'd rather use wail of the banshee, and that's saying something.

False peacebond doesn't make sense. It's presumably supposed to be used to make someone think you cast peacebond, but leaving you available to attack. This requires someone trust you enough to keep your own weapon without hitting you with their own peacebond/other effect, and would still be identifiable as false peacebond so doesn't seem to be better than simply lying.