As far as I have been able to find, there is no associated ("amplifier") skill for Spellweaving. I know it costs mana to use, but none of its powers seem to be affected by presence or absence of other powers in the template. Perhaps Chivalry is the only other major power like this, but then Chivalry is sort of an amplification power anyway, not a primary power. In case I'm not clear, here are some major powers and their amplifiers: * Magery ** Eval Int, Inscription * Swords, Fencing, Mace, Archery ** Tactics, Anatomy * Bushido ** Parry * Necromancy ** Spirit Speak * Ninjitsu ** Hiding, Stealth * Healing ** Anatomy * Blacksmith ** Mining, Arms Lore * Tailoring, Tinkering, Bowcraft ** Arms Lore * Carpentry ** Blacksmith, Tinkering, Magery, Music, Arms Lore * Peacemaking, Provoking, Discordance ** Music * Spellweaving, Cooking, Begging, Herding ** ? nothing ?