This is for PvE mostly; I can see the use for the other 3 Mantras, heck I use both the stability and condition clearing ones regularly, but I can’t really see Mantra of Pain being exceptionally useful. It lacks, according to the wiki, any scaling with weapons or power (no skill coefficient) and while it can be nice for its ability to be used during any other action for some added burst it just doesn’t bring enough to the table to seem worthwhile. Maybe if it had a 1s knockdown, launch or knockback it might be a fairly decent CC skill that also does as much damage as a 1 ability?
Any thoughts? I’d be glad to be wrong but right now it feels like a dead skill, the others at least make use of one of our best (and most trait-relevant) condition: daze, one grants stability on a whim which is frankly fantastic and the other clears 2 conditions which – while not overwhelmingly useful – can do wonders in a support build running Harmonious Mantras.