Scholars - missing the point

[Alu79]

You use Adlo when u are behind in healing. It is basically a Cure II because the shield will absorb some dmg and the next Physick and Embrace will top tank off.
You can also use it to prevent incoming dmg if you know when it is coming (Titan's big swipe, MB,....Ifrit's Fire breath).
Or you can use it on low hp people (under geared or under weakness) to prevent death from unavoidable dmg.
The skill is expensive because when it crit, it is like a 3-4k effective hp for tank. It is also a temporary Hp boost that has lower cast time and more versatile than Stone skin.

4k? Um, I don't think those are accurate numbers :x