POE : Death Over Time

3L - Searing Bond - Inc Burning - Rapid Decay
4L - Zombies-Fortify-Min Dmg-AG Chaos Golem
4L - Specs-Fortify-Min Life-Chaos Golem AG
4L+ - Blade Vortex - Echo - Poison - Blind - - Duration - Control Destruction
3L - Blasphemy - Vulnerability - Enfeeble

or
4L+: Puncture - Poison - Splash - Rapid Decay - Multistrike
3L - Searing Bond - Inc Burning - Rapid Decay
3L - Blasphemy - Vulnerability - Enfeeble
(Asenath Gloves 3 Curses)
4L - Zombies-MPD-MinDmg-Poison
4L - Chaos Golem - Poison - MinDmg -- Splash?
4L - Specs - AG - Fortify - Min Life
2L : Whirling - Fortify

or :

Essence Drain - GMP - Echo - Poison - Rapid Decay

or:

Base of the build is non crit, self cast, Cybil's Paw, EB/MoM Blade Vortex.

The only required item is Cybil's, making the build very cheap.

This is the build i used (roughly, i started Witch since it was originally a Glacial Cascade char).

Links are :

• BV (get quality if you can) - Controlled Destruction - Spell Echo - Faster Casting - Poison. As a six link i would probably go for increased AoE. For a 4 link you wanna drop the Poison gem.
• Blasphemy - Enfeeble - Vulnerability (quality very good and very cheap, i bought 16% for 2c)
• Arctic Armor - Chaos Golem
• Whirling Blades - Fortify - Faster Attacks
• Enduring Cry - Rallying Cry - Vaal Grace (you can use Vaal Haste if you want, i didn't see the point since the build got to 40 blades with not even 20/20 Echo/FC) - Increased Duration. The duration is long enough for both Warcries to be up when needed. Vaal Grace is like Rumi's on steroids when high enough level, and lasts a long time.
• CWDT - Tempest Shield - Chain - Blind (if you have the space for a 4 link)

Enfeeble with the 2 curse clusters i use goes up to almost 40% less damage from enemies, that's insane combined with the fact that when you're standing still and casting BV, AA's chill and mitigation are active.

Vulnerability with 20/20 goes up to over 50% increased physical damage on enemies, and also scales the huge amount of poison stacks you inflict (this is relevant to tanky bosses, normal mobs melt before many stacks get applied)