Just tried out buffed Atum. I must say, I'm really liking her and trying to clear a spot for her on my debuff resistant team.

Haven't tested her heal cap yet, 'cos I've been using her to heal himes already at full health just for that vigor buff, and it is very nice when I burst! Having it off CD after burst is also very nice, you can easily keep vigor buff continuously on someone or even have it on two himes most of the time.

Her first ability is also very nice btw, it gives a big boost to ability dmg and also raises the dmg cap. It lasts 3 turns, so I see some insane synergy with Lugh: Atum use abi 2 on Lugh before FB, Lugh holds abi 2, FB, Lugh nukes hard, Lugh resets nuke, Atum abi 1, Lugh nukes harder, Lugh resets nuke, Lugh nukes harder, Atum abi 2 on Lugh (off CD 'cos of burst) - 3 turbo-charged nukes in one turn and Lugh still has the ability dmg boost for 2 more turns and is healed up and ready to go. Now I just need to pull Lugh... The next mtix can't come fast enough x_x

The main downside I see with Atum atm is that she's not as AAB friendly as Sol. For lazy ppl like me, I'll probably still run Sol most of the time I need a healer, but Atum seems very solid for content that matters.