User blog comment:CTheDragons/Best Buffing/@comment-30293455-20170209144818

Some Healer-Thoughts:

The buff casting of a healer depends on the party. If you know that some of your goup members constantly skip some dailies, you should cast Protective Aura first in the morning (or after the named mambers have logged in). But for 30 MP it's not worth the cost to spell it every time before Blessing. If you need only 1-2 Blessings, skip Protective Aura and keep your mana.

Protective Aura is good for strong bosses (even if it does not reduce the boss damage, can the buffed CON help to keep another goup member alive because they get the damage from missed dailies plus the boss) and / or if you have more than one healer in your group (to increase the effect of their Blessings - the more healers get a CON buff, the more mana you can save for Blessings by spending it for Protective Aura).