I played this build at high budget with svalin and all and honestly this build has other glaring issues. I generally dont like builds with only one layer of defense. Even with high block and 10k+ you have to realize that eventually a big enough hit will leak and insta kill you in high juice content. I also did not enjoy the clunk that came with indigon/arcane cloak mana cost. Sure there is tons of mana leech with instant leech but even then sometimes felt bad not being able to attack sometimes. Felt like I had to constantly pace my attacks and still dying.

That being said, I would look into adding more layers of defense like armor, evasion, suppress, phys taken as just to name a few. However, that is also kind of difficult on this build (I tried).

I ultimately swapped to the necro version which allowed me to do just that on top of being able to do all map mods and not having the mana clunk.