Dread Guard Relic of Ephemeral Mending - Equip: Healing an ally has a 50% chance to restore an additional 505 health over 3 seconds. This effect can only occur once every 20 seconds, and shares this limit with similar healing effects.
^ This one? I have never even considered using a healing relic.. It's heal effect would be based on our Willpower right?
I'm not sure if it would benefit from willpower, what I do know is that it procs off the dark charge and force lightning heals.
I'd say the absorb relic is a given and I prefer the PVP +defense relic for the 2nd slot. More total mitigation points.