PoE builds similar to [EHC] - The Feared #2 - Detonate Dead Necro

This is my take on the Vaal DD ignite Necro. Tried to minmax abit, the clear isnt that good. But the single target is really nice, dont know if theres any other way to clear better. Tried with abberaths hooves. didnt seem to change much imo. Heres the PoB, would love some comments for improvements on both gear, tree and gem setups PoB: Tried some simulacrums, and felt squishy against elemental damage, especially the phys as extra of any element. so i went with the Divine flesh, divined it until i got the Cult of Chaos for 1% max

POB link: I have been following Ziz's DD build and recently obtained an Aegis Aurora and Glorious Vanity. I have to level up a little bit more to slot in the Glorious Vanity. I am struggling to increase my chaos resistance but working on crafting some gear through Harvest. Open to any suggestions to make this build even tankier or deal more damage! Thank you.

hello fellow exiles, im currently onto my first red tier maps this league, im currently running a necro DD still using a tabula, my question would be whats the best version of the build atm, Blackflame for Chaos Ignite damage, or Polaric for more overall fire damage? Blackflame its very cheap atm and polaric its quite expensive for just 20% more fire damage, but i might be missing something I do have a 10ex budget atm, but i dont want to spend it on a +3% damage increase, to be honest i feel i do moderate damage on most bosses, i really wanted to be more tankier. (Trying to cap my chaos res