La Source
La Source is a 3★ Plant Arcanist in Reverse: 1999. Below are the exact Insight materials needed to ascend them, plus other Plant Arcanists to build alongside.
Data updated: 2026-07-11
La Source — Review & Analysis
La Source is a 3-star Plant AoE healer who restores the whole party's HP based on her own ATK (Incantation II) while still able to deal AoE Mental DMG when needed. Her standout trait is control: her Ultimate drains the target's Moxie to delay enemy ultimates, and her Insight automatically debuffs the highest-ATK enemy at the start of battle. She's a cheap, easy-to-obtain support that doubles as a healer and a disruptor for early rosters.
- AoE healing for the whole party scaling on ATK (up to 200% ATK at Incantation II tier 3), giving reliable sustain.
- Ultimate drains the target's Moxie (base -2, more via Molding), delaying enemy ultimates.
- Insight auto-applies a damage-reduction debuff on the highest-ATK enemy at battle start and boosts recovery the party receives.
- As a 3-star, she's very easy to obtain and cheap to Mold, keeping investment low.
- As a Plant unit she's countered by Beast (taking +30% DMG from Beast enemies), putting her at a disadvantage against Beast-heavy fights.
- Being a 3-star, her base stats and damage are low; both her healing and offense scale off ATK, so higher-rarity healers easily outclass her, and her Moxie drain only hits a single target.
Her core role is healing, so prioritize leveling Incantation II to maximize party HP recovery, then her Ultimate to boost Moxie control, and Incantation I last. Since both her healing and damage scale off ATK, pick a Psychube that raises ATK or improves healing output so she sustains harder while still contributing damage; if you need her to survive longer, a survivability-oriented Psychube is worth considering.
Overview
Base Stats (max level)
| Base Stats (max level) | Lv.1 | Lv.30 | Insight 1 · Lv.40 | Insight 2 · Lv.50 |
|---|---|---|---|---|
| HP | 1,206 | 1,831 | 3,069 | 4,576 |
| ATK | 232 | 352 | 590 | 879 |
| Reality DEF | 99 | 150 | 252 | 376 |
| Mental DEF | 104 | 158 | 265 | 394 |
| Crit Rate | 4.7% | 4.7% | 5.3% | 5.9% |
| Crit DMG | 137.0% | 137.0% | 137.9% | 138.8% |
La Source — Skills & Incantations
Incantation I — "Spring Spirit"
Incantation “Insight II: Mass attack. Deals 375% Mental DMG to 2 enemies.”
Incantation II — Spring Spirit
Incantation “Insight II: Mass healing. Recovers (the user's ATK x200%) HP for all allies.”
The Final Rite — Another Version of the Legend
Ultimate “Insight II: 1-target attack. Deals 400% Mental DMG. Inflicts Moxie -4 on the target hit.”
Insight — "Regret Pill"
Incantation “Insight II: DMG Heal +10% when entering battle.”
Skill Quotes
“People wish for unexpected fortune.”
“People never stop wishing for unexpected fortune.”
“People will never stop wishing for unexpected fortune until it appears.”
“She always answers in the negative.”
“She always answers in the negative and gives a stern look for free.”
“She always answers in the negative, but there are exceptions.”
“Since then, the forest has received very few visitors.”
Insight Materials
Insight 1
Insight 2
Resonance Materials
All 9 Resonance levels
Recommended Psychubes
Teams with La Source
Windsong, Blonney and Kanjira all carry the Confusion tag — stacking Confusion on the same enemy makes it more likely to attack its own side, effectively removing it from the fight without needing to burst it down. La Source keeps everyone alive with Moxie + Heal while the debuff resolves. None of the four needs a Euphoria.
Teams →
Darley Clatter, La Source and Sputnik all tap into Moxie together with Heal — combining it across three kits at once outperforms any single carry doing it alone. Marcus keeps the line-up alive with Heal so that payoff has time to land.
Teams →
