This two attributes seem useful if you can combo in a very very fast time, but it doesn’t.
Curse will make your enemy in a curse state for 4 sec, 10% chance
But…
Petrification will not happen
Petrification needs Merkabah.
And
*** Merkabah charging time is about 1 sec and you need to wait until Merkabahs strike your enemy it’s about 5 sec.
So the curse state is gone 
I think curse attribute needs an increase in time or making Merkabah speed faster (With no slow attribute).
