Recommended Cooldowns for PLD MT for Scrapline in Sword Oath unless otherwise stated.

1st Tank Buster - Sentinel + Rampart + Foresight + Shelltron - Virus, Disable. (this attack is physical so any Virus will do) *** This will offer like 90% mitigation in Sword Oath we have it so why not use it.

2nd Tank Buster - Hallowed Ground - 100% mitigation in Sword Oath

3rd Tank Buster - Rampart + Foresight + Shelltron - Virus, Disable, Storm's Path around 80% mitigation here in Sword Oath.

1st Set of Adds - We really want to push the Boss damage so for the first set of adds only a couple people should AOE. Healers + BLM and BRD Rain of Death for procs. As well as War Decimate. Since we are looking to get the most bang for the buck on this first set we don't to sacrifice weaker AOE for stronger single target damages. So we'll let the stronger AOE classes burn down the adds while the others can maintain their single target damage. This is also in an effort to lower TP consumption.

Each mob has 37k HP. That means that Gravity, Holy, RoD, F2 + Flare and a Decimate can take them out in about 10 seconds on their own with minimal impact on Single Target Damage for the boss.

Dealing with Faust - Lands @ North - OT should pick it up immediately and pull facing the East Wall. This will allow DPS to hug the center to avoid the cleave while having immediate uptime on the Faust. This creates a path for the OT to move it south, then West. If DPS is good it should be the NW panel that is lighting up. Faust can be dropped on the line between NW and SW panels to fall in the Lava.
If Faust dies quick enough, this will all happen before the next set of Rocks to allow Line of Sight without the Faust cleaving the group.

Skip Lapis

The boss does Limit Cut @ 72% and you can push it to about 71%. You need to push it to 61% to skip the Lapis Phase and you have 30 seconds to do it.

On top of that, you can't push the boss further than 65% during Whirlwind or it will skip it's Right/Left Sword, reducing available DPS uptime to push.

This means you have to deal 340k damage during the first 20 seconds, and around 226k Damage after Whirlwind goes off (17k DPS -> 22.6k DPS)

So essentially you will DPS normal when he becomes targetable using your typical rotation as well as any buffs you have available. Then after whirlwind goes off you use all your oGCD skills on top of your normal rotation for as much burst in those 10 seconds as possible. (example: If a offensive buff only lasts 20 seconds you would hold off using it until 10 seconds after he becomes targetable etc)

This means saving your CD's that will be back up, which shouldn't be hard since most are 2 minutes and will be coming off CD. Also the push to 72% to end the first phase isn't overly tight so you shouldn't use CD's near the end.

@ i255 Fairy Healing is 850 HPS (2550 HP @ 3s intervals)
@ i255 Fairy Healing with Rouse is 1200 HPS (3600 HP @ 3s intervals)
@ i255 AST Regen (Aspected Benefic) is 716 HPS (1750 HP @ 3s intervals + Initial Heal)
@ i255 AST AOE Regen (Aspected Helios) is 167 HPS (500 HP @ 3s intervals)
@ i255 AST Collective Unconscious Regen is 610 HPS (1825 HP @ 3s intervals)

@i263 Fairy Healing - 900 HPS (2700 @ 3s intervals)
@i263 Fairy Healing with Rouse - 1260 HPS (3800 @ 3s intervals)
@i263 AST Regen (Aspected Benefic) is 780 HPS (1900 HP @ 3s intervals + Initial Heal)