Nightmare

“Stare deeply into my eyes. Feeling sleepy, aren’t you? Hehe… Now, how about you tell me where Rhodes Island stores its “Originium”?”

An Operator suffering from Multiple Personality Disorder, whose aggressive “Nightmare” personality often hides behind the meek-mannered “Gloria.”  “Nightmare” is the source of her codename, as well as the primary user of her Arts, which combine DPS, Healing, and Slow utility into one eccentric package.

The key to effectively utilizing Nightmare is understanding her two very different Skills.

1. Her Skill 1 is Drain Soul, which causes her regular attacks to also heal nearby allies for part of the damage dealt.  If a little more healing is required, but not a lot, this Skill may allow the player to use Nightmare instead of a Medic, thus satisfying the healing needs while at the same time increasing overall team damage.  While using this Skill she also gains a good amount of Dodge, opening possibilities of using her as a ranged damage soak.  Unfortunately, this Skill has a high cooldown and a long initial charge time, so it must be prepared well in advance and can’t be used too often.  Better overall options exist for the ranged tank role, and pure healing becomes less effective toward end game content compared to healers that can bring other utility as well.

2. Her Skill 2 is Night Phantom, which inflicts the unique Nightmare debuff on enemies.  This debuff Slows targets and deals True damage based on how far each target moves over the debuff’s duration.  Night Phantom is particularly strong against fast-moving enemies and can be useful against enemy tanks.  It also stacks with other common "sluggish" type slows, increasing its effectiveness for slowing strategies. The drawback is that the debuff requires targets to be moving, and reduces it's own damage potential by slowing the target. It does absolutely nothing to targets being blocked. This means skill-timing is very important to its effectiveness, which is extremely hampered by the activation being auto (so it can't be manually timed).

Nightmare should be considered a hybrid support Operator rather than filling the role of main DPS or healing unit.  She has better base damage than Supporter Slowing units, but her utility options are harder to utilize. When deployed cleverly, she can be helpful, but her strengths are a bit too niche for her to be included in most teams.

Skill	Mastery	Story	Advanced	Roguelike
	S2M3	None
	S1M1	Breakpoint

Nightmare is a fairly interesting unit, but she is not only incredibly hard to use but also subpar even with optimal play. It's really tough to recommend either skill. Both have serious flaws which limit their viability. Her S2 is a DPS skill with a reasonable cycle time, but it is auto-activated and only catches units already in her range. That makes it incredibly hard to properly use, and worse still, the snare works against her damage.

Conversely, her S1 has pretty strong HPS, and it's something to consider if you favor more niche-style clears, as she is the only Caster who can heal. However, this niche has little value in the general game and the skill has an absurd SP cost. It's a matter of picking your poison with Nightmare, with the best option being to invest your resources elsewhere.

S1 does have an extremely strong breakpoint at M1. She gains an extra target which doubles her output. It's worth grabbing if you are raising Nightmare, even if you don't think you will use her S1 very often.