Doubt about SCH attributes points.

[Tolmos]

Hello, as the tittle says, i have a doubt with that.
If a put all the points to MND, i'll have problems with MP in bosses fights ?
Also I don't understand why SCH is marked in party as PIE.
Any SCH doing high end content can give me a few tips for healing in high end bosses ?
Thank you so much!

Don't save Aetherflow unless you are at 100% mana. Even if you are only down 5%, use it the second it comes up. Do this and you'll never OOM, even when you go nuts on heals.

[PiedPiper]

Don't save Aetherflow unless you are at 100% mana. Even if you are only down 5%, use it the second it comes up. Do this and you'll never OOM, even when you go nuts on heals.

You can also burn charges on drain to top yourself off, spend about 600 mana and pop it.