Recommended sets
Recommended disc sets, best first. Run a listed 4-piece with any of its 2-piece options.
Puffer Electro
4-piece · top pick
Pair with 2-piece:
Woodpecker ElectroBest
Polar Metal
Branch & Blade Song
Astral Voice
Hormone Punk4-piece alone also works while you're still farming a 2-piece.
Woodpecker Electro
4-piece
Pair with 2-piece:
Puffer ElectroBestPolar MetalBranch & Blade SongAstral VoiceHormone Punk4-piece alone also works while you're still farming a 2-piece.
Shadow Harmony
4-piece
Pair with 2-piece:
Puffer ElectroBestWoodpecker ElectroBranch & Blade SongAstral VoiceHormone Punk4-piece alone also works while you're still farming a 2-piece.
Main stats
Main stats this build wants in the variable slots. Any listed stat is accepted.
Slot 4
Slot 5
Slot 6
Slots 1–3 are fixed by the game:
How much this build values each substat when scoring a disc. Anything not listed is a dead roll.
Final combat stats to aim for. Hit them all and this agent is endgame-ready.
ATK
2600
HP
9500
DEF
780
CRIT Rate
80%
CRIT DMG
120%
Ellen's M1 gives her 2% CRIT Rate per flash freeze charge used for 15s, each stack separately. This means you can easily run 10 points lower in CRIT Rate without much trouble, as most of Ellen's damage comes from her consuming flash freeze. It also makes her cycles much better, since her 2.0 buff grants her an autoparry during her charged scissors, it now grants 6 charges rather than 3.
Ellen's M2 increases the CRIT DMG of her EX Specials by 60% if you have 3 flash freeze charges when you use it.
Ellen's M4 is a nice little boost if you're on your way to M6, but is in no way a make or break for the character, since the trigger on freeze or stun is nice since it guarantees she has full flash freeze when going into a stun window, but is wholly unnecessary since her normal cycle involves going between her EX2 and her EBA3.
Ellen's M6 adds 20% PEN Ratio for 6s when using an EX Special, chain attack, or triggering her M2, which you can keep near full uptime on with proper skill usage and with low field time teammates. It also gives an occasional 250% boost to the damage of her charged dash attack, which is a nice addition, but not the main focus of this mindscape.
These mindscapes grant stats that don't show on the out-of-combat panel, so the targets above are lowered once you own them.
Guidance
Ellen has the strictest main-stat requirements of any build here. Slot 4 accepts CRIT DMG and nothing else, slot 6 accepts ATK% and nothing else, and only slot 5 gives you a choice (PEN Ratio or Ice DMG). A wrong main stat in a variable slot costs about twice what picking a lower-ranked disc set costs, so getting these three right is the single highest-value thing you can do for her score. Her crit targets are also shaped unusually. Most builds want roughly twice as much CRIT DMG as CRIT Rate; Ellen asks for 80% CRIT Rate against 120% CRIT DMG, a much flatter ratio, and 80% is a demanding number to reach from substats alone. Worth understanding: CRIT DMG carries a heavier substat weight than CRIT Rate, while CRIT Rate is the harder goal to hit. That is not a contradiction, it is two different parts of the score. Substat weights measure what a roll is worth to her (35% of your grade); stat goals are thresholds you either clear or don't (20%). Rate gets you over the line, damage keeps scoring after you are across it.