As of now Seven Association Fixer has "Weak Spot Analysis",
Each Weak spot multiplies the incoming damage by 1.2x
having 2 weakspots would mean (1.2 * 1.2 = 1.44x) more damage.
If an enemy gets hit and the combo ends, all weakspots disappear.
Talisman has the "Talisman" Status effect
Each Talisman should do 2 damage each. That's all.
I will try to add more general status effects (like bleed and rupture, burn, etc)
But it will be a challenge since I have to synchronize multiple characters :)