Grace

Actually she is the best MR debuffer, healer and booster. since she has all resistance plus she can do both. The downside only is she has 3 move and speed isn't the best. But I would choose her over Fina or Macherie anytime since she is also tanky.

By the way anyone willing to explain Vitalize vs Haste who adds more speed :) ?

A far better Green mage than Helena for AI, and in general.

Reason being that she doesn't need to learn barlight, so she doesn't needlessly spam it. She goes straight into Vitalize, and debuffs. She is also better than Helena, because she has an innate CURE ability. Allowing her to heal outside the debuffs and buffs. Definitely utilize a Green Mage and Time Mage to super buff your dps in combat. It feels great with the combination of Haste/Vitalize.

My current main healer if I need one. Pretty tanky and good skill selection. Biggest draw back is not having an attack spell until holy in white mage tree. I usually have her on green while grinding easy content and switch back for anything challenging.

I honestle think Grace should be rated lower. If you want to give her some kind of offensive skills she loses her ability to support however if you play her full support then she just floats about waiting to be useful, even worse if she runs out of TP

She should def be a S tier MR unit considering her only superior is the S tier UR we all know as Ayaka...

I began using Macherie as my healer.....but realized that Grace seems to have a lot more skills and utility geared towards straight up healing and support....have put her on my team and never looked back!