PoE Ascendant, Kinetic Blast, Spell builds without Replica Dreamfeather

This league i build a Scion Exsanguinate with Poets. It had trouble to deal with rares in t16 white but what decently tanky. What are the options to improve this build to the next steps also suggestions in tankyness would be great. This is the POBB:

WARNING: this is NOT a good build. I just like scion and liked the new Trickster ascendancy point. Moreover, this build is mediocre in pretty much every way. It doesn't have good defense (only 20k eva, 20k armor, 100% spell supp.), it has awful boss damage and pretty lame map clear due to not being champion with adrenaline or glad with challenger charges. This build also uses some uniques that are 1) hard to get a league start and 2) sought after by other builds. &x200B; However, there is some cool tech in this build: Using The Vertex with Tireless notable alongside Inspiration supp

Since tempest shield still didnt updated I used herald of agony as 25% mana reserve placeholder Vulnerability reservation is not fixed yet