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Ranger Mastery research

Technologies 23Lab 0–30

What this branch raises

Ranger Hero ATK 3Ranger Hero DEF 3Ranger Hero HP 3Each Ranger Hero deployed in battle increases all Ranger Heroes' ATK in your team 2Each Ranger Hero deployed in battle increases all Ranger Heroes' DEF in your team 2Each Ranger Hero deployed in battle increases all Ranger Heroes' Damage Dealt in your team 2

Filter by the lab level you have

Every technology we hold

Technology	Effect	Lab	Max lv
Ranger Synergy: ATK I	Each Ranger Hero deployed in battle increases all Ranger Heroes' ATK in your team	30	10
Ranger Synergy: ATK II	Each Ranger Hero deployed in battle increases all Ranger Heroes' ATK in your team	30	10
Ranger Synergy: DEF I	Each Ranger Hero deployed in battle increases all Ranger Heroes' DEF in your team	30	10
Ranger Synergy: DEF II	Each Ranger Hero deployed in battle increases all Ranger Heroes' DEF in your team	30	10
Ranger Synergy: DMG I	Each Ranger Hero deployed in battle increases all Ranger Heroes' Damage Dealt in your team	30	5
Ranger Synergy: DMG II	Each Ranger Hero deployed in battle increases all Ranger Heroes' Damage Dealt in your team	30	5
Ranger Synergy: HP I	Each Ranger Hero deployed in battle increases all Ranger Heroes' HP in your team	30	10
Ranger Synergy: HP II	Each Ranger Hero deployed in battle increases all Ranger Heroes' HP in your team	30	10
Ranger: ATK II	Ranger Hero ATK↑	30	10
Ranger: ATK III	Ranger Hero ATK↑	30	10
Ranger: CMD I	Ranger Hero CMD↑	30	5
Ranger: CMD II	Ranger Hero CMD↑	30	5
Ranger: DEF II	Ranger Hero DEF↑	30	10
Ranger: DEF III	Ranger Hero DEF↑	30	10
Ranger: DMG I	Ranger Hero DMG↑	30	5
Ranger: DMG II	Ranger Hero DMG↑	30	5
Ranger: HP II	Ranger Hero HP↑	30	10
Ranger: HP III	Ranger Hero HP↑	30	10
Ranger: Ultimate Guard I	Ranger Hero gains additional DMG↓ in battle	30	10
Ranger: Ultimate Guard II	Ranger Hero gains additional DMG↓ in battle	30	10
Ranger: ATK I	Ranger Hero ATK↑	0	10
Ranger: DEF I	Ranger Hero DEF↑	0	10
Ranger: HP I	Ranger Hero HP↑	0	10

Where these come from

Single source1 source · verified 2026-09-03 · patch S4

rtfm.codes — "name":"Ranger Synergy: ATK I"captured 2026-09-02

Research is the anchor problem

This branch is single-sourced, like the whole research tree, and marked that way rather than hidden. It also matters more than it looks: research multiplies Alliance Duel points, by different amounts on different rows — we have watched one screen show ×1.00, ×1.70 and ×2.05 at once. That is why every duel point value on this site is labelled a base value, and why a guide that prints one without saying so is telling you less than it appears to.

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An unofficial community reference for Last Asylum: Plague, not affiliated with its publisher. Every number carries its source. Last verified 2026-09-07 · patch S4. How we verify → · What we collect →