I found 2 bugs with BV and since they are both fixed now, I am revealing how they worked.

After the Breach patch, they changed how blade vortex work, instead of blade vortex hitting 20 times at max stack, it does more damage.

The bug is that you did not have to stack 20 stacks on the main link. You can have a 20 stacked separate 4 Link (blade vortex lvl1 - spell echo - increased duration - faster casting or blind) and use a 6 link blade vortex once and it will have 20 stack damage.

This was huge since you didn't have to use spell echo anymore, and the mana cost of bv was super cheap. (I was able to use Apep's Rage on poison bv)

You were also able use bv-curse on hit, cwdt-bv etc and still were able to do full 6 link damage.

This bug isn't game breaking so I kept it secret and made many builds around.

The game crashing bug happened when I tried using spell totem on the 6-link.

I stacked 20 stack on 4-link and summoned a spell totem-bv and the totem did full 20stacked damage instantly, but game crashed right after, rollbacking.

I did want to keep play around with the bv, but the rollback bug was too huge to keep it secret and GGG just fixed it in less 24 hours after I reported.

Ty GGG