Staff question

Which of the two would be better in the long term?
Common neg stats:
A) -10% HP regen
B) -10 MP regen
C) -10 Dodge

Common pos stats:
A) +10% MATK
B) +15% CSPD
C) +15 CRT
D) + Water Element

Variable stat:
1) +5% M.pierce
2) +10% INT
3) +10% ATK
4) +15% Against Fire/Other element

The build is Staff/Dagger with magic blast and magic burst as the dps skills and finale as a finisher if the opportunity presents itself. Need a staff that can fit multiple situations and would prefer to not have flinch ailment on magic blast due to reactive bosses.

 

-10% HP regen
regenerate 10% slower after battle. doesn't affect you that much when your maxHP is low.

-10 MP Regen
this reduces MP regen by a flat 10. if your maxMP is less than 1000, you will lose MP outside of battle.

-10 dodge
same effect as if the enemy is 10 levels higher than you. depending on the enemies hit stat, your dodge rate may decrease by 2-3%.

+10% matk
nothing wrong with this

+15% cspd
this will only raise your base cspd obtained through DEX (and AGI).
it has no effect on cspd from equipment, skills and potions.

+15 crit
good, if you can afford it.

Water Element
Freeze increases the attack interval by 100% on mobs and 50% on bosses.
most effective on slow attackers.

+5% magic pierce
it's like reverse matk. the effect scales with the enemy stat instead of your own.
usually more effective on big monsters rather than small ones.

+10% INT
gives you up to 25 INT (more after stat cap increment), which is 100matk and 25atk (and a minor amount of mdef and aspd).
considering that you use both, it is more effective than 10%matk+atk.
(regarding 10%matk, it increases only your base matk, not the number shown on your stat screen.)

+10% atk
if you can afford it. without STR there are better choices, though.

+15% against element
more effective than 10%matk/INT, but conditional.
it's a matter of preference.

 

The 10% INT seems to be the most useful tho general wise.

Thanks for the info