Blazing and divinity are more of training skills, but still are not that useful. You get a 1/13 chance of absorbing 1/11 of the damage you deal, so on average you regen 1/138 of the damage cabal alz you deal. Easily duplicated by adding 1% absorb on your offhand dagger or main weapon or something from a teardrop of edoneh option item. And 1% from an offhand dagger is 1/100, so its even better than that and saves some skill points.
However, if you are a pve specialist, then maybe blazing or divinity are more useful to you. Frozen has almost 0 uses in pve. Unless you need to run from a monster, which is not likely, darkness does effect monsters, but they attack so slowly anyway, you probably will not notice its effects when they activate. Blazing and divinity are only for extreme pavers, frozen for defenders, darkness for guardians.