This is a greater rift pushing build. If you're doing speed rifts, stick to using the experience build with 2 pieces of Born's and Cain's. As with all crusader proc builds, you are there to deal damage via a monk's Static Charge. Don't use this build without a static charge monk.
Attack speed. Lots of it. This allows you to proc Static Charge with Slash more frequently, and provides additional wrath generation for more Condemn usage.
Okay, but I'm giving up a lot for that, right?
It's mostly experience, which isn't a concern for a push build. In terms of combat stats, you lose Born's (15% life, 10% CDR), Cain's (8% aspd, more than made up for by Roland's 6pc), and Leoric's Crown (12.5% CDR). The loss of CDR is the largest concern for uptime on Akarat's Champion, but with Gogok stacks and perfect rolls CDR everywhere possible, Akarat's cooldown is 28s. With Obsidian Ring of the Zodiac, there is little or no downtime in combat.
How much attack speed do I need, exactly?
The [sheet] APS cap for Slash with the Fanaticism passive is 4.57, at which point the attack animation lasts 11 frames. With Roland's 6pc, it is quite easy to reach this attack speed. Between Gogok of Swiftness, Laws of Valor active, Fervor, Paragon points, 6pc Roland's, and the Static Charge monk's Mantra of Transgression, you gain 215% Attack Speed. With a 1.40 attack speed weapon equipped, 12% attack speed on gear is all that's required to reach the APS cap. Since all of the rings used in this build naturally come with attack speed, it is quite easy to reach this amount.
This frees up your bracer slot and gives you more flexibility in weapon choice. A flail is ideal as it can roll Wrath Regeneration.
The jobs of a static-support zDPS crusader are to proc Static Charge and apply Laws of Valor and Judgment. To this end, gearing priorities lie in survivability, cooldown reduction, and resource cost reduction.
Extra Wrath Generation on the weapon and shield are useful as well.
-Numlock Akarat's Champion and Laws of Valor.
-Keep up 5 stacks of Roland's 6pc to hit things faster.
-Condemn as much as you can.
-When monsters are grouped up, use Judgment on them to apply the 20% crit chance modifier and 40% damage reduction.
***Focus on hitting things tagged with Static Charge, otherwise you're wasting your time and everyone else's.
-Cindercoat equipped with Roland's Stride in place of Illusory Boots - Additional resource cost reduction on condemn at the cost of mobility.
-Hellfire amulet equipped (Righteousness) - Extra resource generation. Lose either charm proc, oculus ring, obsidian ring of the zodiac or illusory boots (via rorg).
-Sweep Attack instead of Shield Bash - Sweep Attack attacks faster than Shield Bash and costs less Wrath, letting you Slash and Condemn more often. You lose the ability to charge to monsters though. (Illusory boots are a must with Sweep Attack to navigate density.)
-Moratorium, Mutilation Guard, or Toxin instead of Taeguk.
A note on Condemn with Frydehr's Wrath: Do not mindlessly spam or numlock Condemn with Frydehr's Wrath. Attempting to use the ability before it is ready will lock you out of it for a period of time, giving you significantly fewer chances to proc Static Charge.