This set is actually quite good for XP grinding, and honestly even if some people are annoyed because old pelinal was VERY useful, I love off-meta and original set so...

It's unfortunate that the old set is gone as this new one is in no way even remotely close to the same functionality. With tons of new sets released each year, I find it odd they decided to completely remove one in order to squeeze this new one in. I have a feeling they wanted to axe the old pelinals and this was as good a reason as any to do that.

With that out of the way, the new set does have some uses. As mentioned above, it's a decent mob grind set if you can offset the damage dot. That's easy enough to do with Pale Order or other self healing. I'd hesitate to use it in any content without a large supply of trash to kill. Even in solo arenas, the main benefit will likely fall off on boss fights or between waves, making it less than ideal. Perhaps a 20 second duration on the buff would be a nice boost.

The totally nonsense change, why revolutionating the old Pelinals Aptitude

I briefly considered keeping all of my old pieces due to the 2-4 lines. But in the end I realized I could get better stat density out of so many other sets that it just wasn't worth it anymore.

As for the 5th line? Even in places like the areas (literally the only places I'd ever bother to use it) there are just so many other options that work as well if not better. I didn't feel particularly powerful at max stacks and while the self-harming DoT isn't super strong, it can catch you off guard between packs of enemies.

Just totally worthless so I deconned it all and got back some much needed bank space.

As long as you have have adds to kill ( which is most pve situations) you go on invincible killing spree. Great for arenas. Make sure to have self heal handy, got myself killed couple of times;)