Ast cards 6.0 rework

[YusiKha]

I agree. I'm all for making things more fun. I'm just heavily against going back to the old system where the "balance or bust" situation can occur.

So.
Balance is worth 10% damage.
Arrow is worth 6.66%, though depends on the party comp
Spear is 4~6% depending on crit substat

We have an obvious outlier here. Just reduce Balance's duration to 2/3 of the other cards. Makes it roughly equal to the others in general use, but makes it better if you can extend its duration.