Ast cards 6.0 rework

[Rai_Takara]

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.

Arrow is hated by most people because it messes up their rigid rotation. Only few jobs like BLM can get away with it.

I think buffs to chance is not good either because rng. The point of the new cards is to avoid rng to damage. An AST will always output a consistent amount of damage buffs is the idea. Either all cards dont buff damage or they all buff it equally. Perhaps putting all the damage into divination and making cards just pure utility might be an option.