Ok I am back! Next idea for expanding magic as it is now, SIGILS. Sigils would broken down between wards and the war paints we already know. With warpaints, effectively instead of giving attribute bonuses, here we have them give perks. Useable on both players and thralls. Permanent until removed even after death with the item that already does it having price tag upted significantly. Wall / floor paints on the other hand would be the wards.

Wards would on the other hand have an area effect similar to the coffers (but smaller). Its effect being handing out a perk to all legal recipients for that perk. The perk can be a buff for clan mates / thralls or even a debuff for every one else in range.

Now for how you would learn Sigils, would come one of three ways, may have its own tome that has to be upgraded etc. Could be intertwined with other tomes. And lastly a solid mix of the two above.

After this I have one more expansion for the magic system before I start with the spell ideas.