Wanted to share this Build since I've not seen any real "AFK" builds yet.
Keep in mind that this is NOT the quickest or even best build, but it IS Perpetual. You can leave this running and it WILL eventually beat any Shard, Or net a crap ton of Black Wax to make your REAL build.

That being said, this isn't something that should (or reasonably could) be done till after your 3rd or 4th Shard. Might be able to pull it off for your Second Shard, but it would take longer than some simpler methods to clear it.

This build is for those people who either have encountered a Shard they just CAN'T beat for some reason or another, or someone who wants to farm Black Wax and Flame power AFK over time.

Now, for the actual build. Its actually pretty simple.

(Note, I messed up the screenshot a little bit, its suppose to be 25 into mana breathing and only 5 into March).

https://media.discordapp.net/attachments/372106676276428801/1009944231609110668/Untitled.png?width=1015&height=676

First is to get Usurpation's Return to level 20 (returns potion up to floor 19). Ideally, this is done in tandom with the next step, but depending on how much Wax you're getting, you might not need to do so.
The next step is getting your [[b]Experience Gain[/b]] and [[b]EXP from Monsters[/b]] to a Level were their upgrade cost is roughly 8,000 - 12,000. The actual number doesn't really matter, what you want is to be able to get to 125SP before Floor 20 of any given Shard.

After this and you've hit those points, Put 2 into Strength to unlock [[b]Rage of Darkness[/b]] and 110 into Wisdom for [[b]Mask of the Third Eye[/b]].

The Mask will allow you to unlock ANY skill for a flat 10 point cost (and 1 after for each level in that skill) which makes it a necessary for this particular, as it lets you get a specific combination of Skills that makes it work.

Next, spend 10 to buy a single point into [[b]Rough Clicks[/b]] (Dex) this will make your Rage of Darkness free, Then spend 20 points to unlock unlock both [[b]March[/b]] and [[b]Indefatigability[/b]], then spend 5 more points to bring [[b]Rough Clicks[/b]] to 6. This will let you run BOTH [[b]March[/b]] and [[b]Rage of Darkness[/b]] at the same time for free, drastically increasing your movement speed.

Next, increase March and Indef to 5 each.

After this, buy 25 points worth of [[b]Mana Breathing[/b]] and get [[b]Frozen Soul[/b]] to 10
Both March and Frozen Soul stack which each other, meaning Frozen Soul will slowly by surely increase the overall damage of March as time goes on, even after its been Reset. This is the Key to the build, Slow, perpetually snowballing damage (thus, Frozen March).

Finally, buy a single point of [Cunning]. This will keep March Triggering when it dies.

After that, its just a matter of letting it run its course over the next few hours. How Slow or Fast it is can be adjusted by taking points in Blacksmith Craft or similar skills, or taking points out of March and Frozen Soul (if you want to farm Wax.
But its great for doing so.

Below is 12 hours worth of afk as I was at work.

https://media.discordapp.net/attachments/372106676276428801/1009944262164619386/Untitled_2.png?width=985&height=676