Guild Wars 2

I noticed that Mantra of Pain takes 3 seconds to cast under water but 5 seconds on land. Is this a bug or was it meant to be that way? Seems a bit odd that Mantras are made far easier to use underwater than on land when under water is generally far more forgiving/easier and the 3 second cast would be more favourable on land.

Also speaking of which I wouldn’t say make mantras 3 second casts because that would be over kill but it would be great if Mantras could be 4 second casts instead of 5 or even 4 and a half second casts it would make them more feasible to use. Or at least if you keep the 5 second casts to make more of them without CD like the Mantra of Concentration is the last in the list of abilities I would pick because it’s only useful in sPvP and that is only in very specific situations making other abilities far more favourable.