Rather than feeding NPC's to One-of-Many, take the high road and defeat him. He's hard to defeat before you go to the Sword Coast, but it can be done. Use items and spells to overcome fear. Weapons don't do much damage and your guys tend to run away if they get too close to him. I had two magic users hitting him with Isaac's Missle Storm and my rogue had a wand of magic missles. My cleric and the druid Umojo healed as needed while the fighters & summoned dinosaur kept him distracted. If you can overcome him, it's well worth it. You get several hundred experience points and a really cool helmet, The Imarskarcana--it grants +10 Lore, 26 spell resistance, and the following spells once a day-Gate, Legend Lore, and True Seeing.