Occupies a weapon slot but grants one additional passive weapon choice on each level-up. Arma Dio deals no damage and does not evolve — it is a pure utility item that converts a weapon slot into an extra passive slot. The restriction is that only passive items can be chosen through this extra pick; weapons are excluded.

Found in the Laboratory stage. Its value is entirely dependent on how much benefit an extra passive pick generates for a given build — in passive-heavy builds with multiple evolution materials to collect, the additional pick per level-up can significantly accelerate setup completion.

Find Arma Dio in the Laboratory stage. Restrictions:

• Consumes one weapon slot
• Extra level-up pick is limited to passive items only (no weapons)
• No evolution
• No direct damage output

• Converts a weapon slot into a functional extra passive slot per level-up
• Accelerates collection of evolution materials and support passives simultaneously
• High value in builds that need many passive items concurrently
• Unique pick-up method from the Laboratory stage

• Wastes a weapon slot on zero direct damage output
• Extra passive pick is passive-items-only — no weapons
• Requires selecting the Laboratory stage
• Marginal benefit in builds that pick up passives naturally anyway

• Characters running multiple weapon evolutions simultaneously: extra passive pick relieves the "not enough slots" pressure
• Imelda: +10% Growth means more level-ups where the extra pick can fire
• Any character where passive competition is the main bottleneck

• Passive-boosting arcanas generally: the extra pick compounds with arcana bonuses on the selected passives
• XXI Game Killer: higher item density makes the extra passive pick more consistently useful

• Arma Dio should only be considered when at least 2–3 primary damage weapons are already locked in. Giving up a weapon slot to a no-damage utility requires the passive bonus to compensate through significantly faster evolution or support stacking.
• The extra level-up pick is passive-only — prioritize using it for hard-to-find evolution materials rather than straightforward stat passives that appear frequently anyway.
• In most standard builds the weapon-slot cost outweighs the passive acceleration. Arma Dio shines in edge cases: heavy multi-weapon builds where passive competition is genuinely the bottleneck.

Q: How do I get Arma Dio?
A: Find it in the Laboratory stage — it's not chosen from the standard level-up menu but discovered within the stage itself.

Q: Can I pick weapons with the extra level-up choice?
A: No — the extra pick is limited to passive items only. Weapons cannot be selected through it.

Q: Is giving up a weapon slot worth it?
A: It depends entirely on the build. For builds that need 4+ different passives simultaneously and struggle to find them, the extra pick per level-up is meaningful. For builds where passives appear naturally, the slot cost is generally not worth it.