hm, -20% cooldown that diev 1 gives is absurd.
C2-diev2 build is higher DPS then priest variance.*(see future point)
Also consider that diev 2 gives carve world tree (silence statue) that makes monster within the area NOT ATTACK you… GODSENT.
In that set up you will have a strong safety zone, fade, carve world tree
Also diev has piercing type attack (carve attack) which helps on leather type monsters and can be spread with inquisitor wheel (if that is what you are going for on rank 8)
C2-p1-diev1 is solid choice if you are just looking for cooldown reduction and free teleport from anywhere.
I main c2-diev2-monk3-inqui and can not be more then happy with it. But again you might just not like it so there is that (which is fine btw, i feel the same about Bokor, i dont like it and will never level one, but thye are strong)
Another point, you would want to build for rank 8 or future proof build to make sure your skills don’t fall off late game when rank 9 and on release, so getting a dievderby will help a huge amount, since it is not scaled with any stat (outside of owl which do decent enough damage with 1 int and magic attack from maces)
Energy Blast is nice when you learn to use it properly, but it is not exactly a party play skill, as mentioned previously due to long charge time.
*Dievderby is a VERY strong damaging option. before R8 it was way stronger in damage than priest variant, now i am not sure.
**But if you feel rich you can always buy moonstrance scrolls which is about the only thing from priest that gives a decent damage boost (blessing does not count since it can be purchased from pardoners)