New PLD should learn how to use their mp effectly...!!!

[Furious]

Couple of things.
1st: both Holy Spirit and the passive that reduces the cost are unlocked at 64.

I assumed you were 63, since you said you ran that dungeon.

2nd: Eclipse is better than Holy Spirit in any pull of 4+ mobs. Using Holy Spirit in those situations is a DPS loss and by the time the numbers are in Holy Spirit's favor, the mobs are already at Death's Doorstep anyway.

Depends on whether or not you have FoF or Requiescat available. And, that's pretty much what I said. As for being at death's door, damage is damage. It's either better or it's not.

3rd: You cannot really spam Clemency or Holy Spirit and still maintain aggro. Yes, Clemency might help for a bit but good DPS will outpace the Emnity generation of it fairly easily and while Holy Spirit hits very hard, it doesn't generate enough Emnity per cast to outpace them either.

Clemency has far more threat than total eclipse ever will. If you are missing the HP to be healed (or anyone else is), clemency generates base enemity equal to half the healing done (which means 600 potency of enmity PER TARGET). Clemency is our best aoe enmity generator, and 5.5 times better than total eclipse alone when it heals. It also doesn't suffer from the 20% "damage" reduction while in shield oath.

In shield oath, Total Eclipse generates 110*.8*2.7=237.6 potency per target.
Clemency generates 1200*.5*2.7=1620 potency of enmity per target. For it to equal total eclipse in enmity, it needs to do only 15% of its potential healing.

This is the reason why you sometimes see healers creeping up on your enmity on aoe pulls where other dps don't; the healing they do generates .5 enmity per point of healing but it applies it to every mob.

4th: Since Royal Authority has been changed to the Riot Blade combo set up, the amount of times I'm using Riot Blade has doubled resulting in more MP returns as well.

I said effectively spamming those skills, as in using it to its max potential without it affecting my role as tank. If I lost aggro because I was spamming Holy Spirit, that wouldn't be very effective now would it?

If you lost aggro while spamming clemency, you are doing it wrong or nobody is taking damage. Holy spirit is only good for not true aoe, but small target aoe (2-3), which is what I said.