1) Why are you not using maim in 6L?

Using maim on reckoning for the increased physical damage taken from the support so no need for maim in the 6L, running cruelty instead (still testing).

2) Why do you have 0 mana?

No mana because using blood magic keystone, can switch to lifetap after mana change patch for more auras + damage.

3) Why is my clear not as good as yours?

I'm using lioneye's vision chest for pierce link, you can get pierce in other ways from +1 pierce glove/helm craft or from poachers aim unique jewel from Act 5 quest reward. The helm enchant (Spectral Shield Throw Fires 3/5 Additional Shard Projectiles) is also very big and worth investing in when you have the currency, even the +3 version (+5 is uber) is very good.

4) Why is my damage low?

Make sure you have a good stat stick weapon like prismatic eclipse or for more raw dps a phys dot multi + physical damage over time warlord weapon.

Also make sure you have vulnerability somewhere (Tempest shield + Hextouch OR Reckoning + Maim + Hextouch or Curse on Hit Ring) and that you have a high armour shield (Your shields armour scales your damage).

You can get more dps on SC by using 2 cluster setups instead of 1 and dropping life nodes, socket this below Call to Arms keystone (expensive but more damage).

5) How do I craft the warlord weapon?

You can just use corroded fossils on an ilvl 78+ warlord axe/sword/mace. You want to hit physical damage over time prefix and increased bleeding damage suffix with an open suffix for physical damage over time multiplier craft. You can unlock the craft from unveiling weapons.

6) How do I craft a better shield?

Dense fossils, defence reforge from harvest or shrieking/deafening essence of dread on a high ilvl (86 ideally) colossal tower shield.