I know the video is a bit long (I may have had a bit too much fun making it). I was targeting 7-8 min and went a bit over.
Anyways, the concept is that the spiders from Arakaali’s Fang give HUGE bonuses to attack speed and poison damage (40% attack speed, 300% inc poison dmg). That’s great and all but AF has horrible base stats so we need to combo it with a skill that doesn’t care about weapon dps.
Basically, Shield skills and Spells/Impending Doom (I don’t suggest this one because no cast speed). For example, I took Jungroan’s Poison Shield Crush char and replaced his main hand with Arakaali’s and got a respectable 5M dps improvement (https://pobb.in/8QFnnS9aZ5up). Note that I did change some things around in the pob compared to Jung’s actual character. Also, you can support the spiders with withering touch which keeps wither uptime high.
There are some downsides though, Arakaali’s needs uptime, and while the spiders do last for a whole minute, resummoning them during a tough fight might be an issue. Also, it requires a writhing jar and desecrate in the build to function.
The video goes over all this in more detail so if you have any questions, you can find them there. Make sure to set your spider count in PoB config to 20 when you do comparisons.