General

Thanks everyone, I see the different situations they would be used in. I appreciate it.

As a collection of what other people have said, along with my own opinion:

Yellow Aura: Pretty much what bloodravn said. It should primarily be used for training, maybe you could use it as a nerfed SI at bosses

Dark Aura: If you're fighting against monsters that require multiple hits, use this. It's for both training and bossing, and is probably the most important bossing aura

Blue Aura: You can use it as Halfhearted stated to save potions, but not all of us are so potion-conservative. Yellow or Dark aura could be used instead to speed up the training process. In bossing situations, this is probably our second best aura. If you're fighting against a boss that could one hit you (or other members of your party), this could help keep your ranged attackers alive.

Auras really just depend on the situation. Sure you could use Dark aura 24/7 for the attack boost and that'd be great, but battle mages are a supportive class and it's important to understand what supports would be most beneficial for the party type and area

I'm going to be using yellow aura for training. Mobility and the extra attacking speed (it stacks with booster i think) makes it pretty fast training on monsters you 1 hit. Dark and blue aura is used during bossing. Blue aura is pretty good in dojo where you don't have any pots.

They fixed the aura thing as it came to GMS, I tested it. I moved to a different map after buffing my friend and she lost the skill.

Dark aura is for solo training.
Yellow is for bossing / party training .
Blue is for....something.

In a party with 3 Battle Mages. Use 3 different auras?

[quote=senpac]throughout 3 and 4th job? just a thought dont flame me.[/quote]

I mean, just in general. If you want to say 3rd and 4th job, then sure. For example, at bosses, when training, pq's, etc. However, I did just see a video on the front page of a lvl 155 battle mage that buffed a party member with all 3 some how.