I bought the first level this attribute, that give 10% of critical attack with a two-handed sword. Bought the second level too, but still is write that give 10%. I want buy the third level, but the value don’t increases. How do work this attribute? I didn’t understand T-T
Sorry for double post, but I solved. Only the descriptions are wrong, the effect give 10% / 20% / 30% as I thought.
is this really worth to invest? or do i need high crit rate for it to work?
Well… I’m investing in critical. Equips, gems, and now attributes are dedicated to give critical (attack and rate). But if you put only attributes, I think that worth not.
oh demn… so it needs high crit rate need more moneys for the equip and gems 
Does anyone know whether it increases your existing critical rate or gives a flat percentage point increase?
Nevermind, looks like I answered my own question. Since the attribute can be toggled, you can verify that the increase to critical attack is indeed relative to your base critical attack.