Quote from Kaeporo;229134:
Ignore him. The set decreases mana usage by 10%. If that's important to you, by all means go for it.
Wow like 10% reduction set with crappy def and prot for clothing that cannot be upgraded is better than an armor. OBVIOUSLY. We should pay attention to Kaeporo cause he is such a pro mage!
Edit:
If you're looking for a good answer, Blizaga, it is the same I gave you initially. A wand for MP reduction is superior than Karis. 10% alone is useless unless you have high ranked adv magic. Also, I have covered this issue in other threads and it is my believe and I talk from experience when I say that humans should use heavy armor when fighting.
You get more benefits from it. Marginal benefit of a 10% reduction set when using IS is like 3.2MP while opportunity cost is "sacrificing" def and prot, as well as melee pd. Also, I know this whole thing of "you shouldn't get hit", but you will get hit, several times, even if you do things right, particularly in a party. Do you want to get 1 hit ko'd? Of course not.
So yeah, Karis is just for looks.