Well ive been playing through serpent isle again and im glad to see that my favorite glitches from the original still exist. I've never seen any of these in print before so i hope you all enjoy.
1. As i posted before, if you cast vibrate on Luther before you win Dupre's Shield off of him you can have 2 Dupre's Sheilds.
2. This one is a little complicated so bear with me

3. After your companions are turned into the banes walk into the previous room and take Selina's corpse out of the room and drop it far away (If you don't do this the game will screw up and you'll be in a infinite loop). Return to the room where you killed Selina and use the hourglass of fate. The monk will appear and tell you you can't go on with out your companions and will create a copy of each of your dead characters who will be in your party till you kill the banes
All of these glitches worked in the original and did not stop me from beating the game normally.
By the way to any exult people does the deamon sword's damage change depending if the deamon is in it or not