A weapon-selector that opens a picker menu of every available passive item when collected. Not a damage weapon, but the only way to grab a 7th passive when your build needs it.
Arma Dio does not deal damage and has no stats in any combat sense. Per the Vampire Survivors wiki, it is classified as a "Weapon Selector" alongside Candybox, and collecting it opens a picker menu listing every passive item still available in your run. The picker rolls in addition to your standard six passive slots, which is the only way in v1.13 to legitimately equip a 7th passive item without exploiting Candybox glitches. From our experience, that makes Arma Dio one of the most build-defining drops in the game even though it never lands a single hit.
The other thing the wiki documents that most player guides skip is the appearance scaling. Per the wiki, Arma Dio's rarity is multiplied by Luck, which means high-Luck builds see Arma Dio drop more often when running stages that contain it. Combined with the Hail from the Future (X) arcana, which the wiki notes spawns up to seven Arma Dios per run, a Luck-stacked endless build can grab almost every available passive in a single run rather than the standard six.
Arma Dio, a weapon-selector that opens a passive item pickerAccording to the Vampire Survivors wiki, Arma Dio cannot be selected through normal level-up choices. Unlike Knife or Whip, it never appears in the standard four-option level-up screen. The only way to obtain it is to physically collect it from a stage as a pickup, with five different unlock paths covered in the section below. Per the wiki, the pickup itself appears more often when Luck is high, since rarity is multiplied directly by the Luck stat.
When the player walks over an Arma Dio pickup, the game pauses and opens a passive-item selection menu. The menu shows every passive item that has not already been picked or excluded from the Arma Dio pool. The selected passive immediately drops into a free passive slot at level 1, and the Arma Dio pickup is then removed from the item pool for the rest of the run. From our experience, the picker behaves like a guaranteed level-up that always offers passives, which is uniquely useful when the standard random level-up pool keeps offering weapons you do not want.
Per the wiki, since Arma Dio is itself classified as an active weapon, it cannot be obtained through normal level-up screens when the player has already filled all six weapon slots. That mechanical detail produces a counterintuitive interaction: to receive a passive item from Arma Dio, you may need to evolve a weapon (uniting it into its evolution form) to free up a weapon slot first. Players who reach the weapon cap at minute 6 with no evolutions ready will walk past Arma Dio pickups and receive no benefit because the weapon slot is full.
Stack Luck early on stages that contain Arma Dio pickups. Per the wiki, the pickup's rarity is multiplied by Luck, so high-Luck characters like Santa Ladonna and Christine Davain encounter Arma Dio drops at a noticeably higher rate. Combined with the Hail from the Future (X) arcana, which spawns up to seven Arma Dios per run, a Luck build can equip a full passive sweep before minute 25.
Per the wiki entry, Arma Dio has no offensive stats. The full stat block is unique compared to every other weapon in the game:
| Stat | Value |
|---|---|
| Type | Weapon Selector (one of two, alongside Candybox) |
| Max level | 1 (cannot be leveled up) |
| Rarity | 50, multiplied by Luck stat |
| Damage | None (does not deal damage) |
| Area, Speed, Amount | None (no projectile or area mechanic) |
| Evolution | None |
| Pickup behavior | Opens passive item selection menu on collection |
| Selection target | All passive items not yet collected and not excluded |
| Stages with pickups | Laborratory, Neo Galuga (DLC), Ode to Castlevania (DLC) |
| Excluded passives | Nine passives cannot be selected (see below) |
Per the wiki, this stat block is what classifies Arma Dio as a Weapon Selector rather than a normal weapon. The other Weapon Selector in v1.13 is Candybox, which selects from a smaller pool but can grant Arma Dio itself as a side effect, allowing layered selector chains in late-run loadouts.
Per the wiki, there are five separate ways to unlock and find Arma Dio in v1.13. Each path has different requirements:
| Method | Requirement | DLC needed |
|---|---|---|
| Laborratory pickup | Enter rooms to the north of the stage and hit enough levers to spawn an Arma Dio pickup | None (base game) |
| Neo Galuga map | Find one of the three Arma Dios shown on the Milky Way Map for Neo Galuga | Operation Guns DLC |
| Ode to Castlevania map | Find one of the four Arma Dios shown on the Milky Way Map for the Ode to Castlevania stage | Ode to Castlevania DLC |
| Santa Ladonna level 40 | Reach character level 40 while playing as Santa Ladonna; an Arma Dio spawns automatically | None (Santa Ladonna is base game) |
| Forbidden Scrolls spell | Cast the spell "apritisedano" in the Forbidden Scrolls of Morbane menu | None (base game) |
From our experience, the Laborratory path is the most reliable for first-time unlocks because it requires no DLC and the lever-room sequence is easier to stumble into than reaching character level 40 with Santa Ladonna. The Forbidden Scrolls spell is the fastest if you already have access to that menu, since "apritisedano" is the Italian phrase for "open the cabinet" and unlocks Arma Dio immediately without a stage run.
Run Hail from the Future (X) on Ode to Castlevania for maximum Arma Dio drops. Per the wiki, Hail from the Future (X) spawns up to seven Arma Dios per run, and the Ode to Castlevania stage already has four pre-placed pickups on its map. Stacked together, that is potentially eleven passive selections from a single run, almost double the normal six-slot ceiling.
Per the wiki, nine specific passive items are excluded from the Arma Dio picker menu. These passives must be obtained through other means (level-up screens, character starts, or specific stage interactions):
| Excluded passive | Why it is excluded |
|---|---|
 Silver Ring | Part of the Infinite Corridor evolution chain; reserved for specific unlocks |
 Gold Ring | Part of the Crimson Shroud evolution chain; reserved for specific unlocks |
| Metaglio Left | Part of the Infinite Corridor evolution chain |
| Metaglio Right | Part of the Crimson Shroud evolution chain |
| Academy Badge | Tides of the Foscari DLC; locked behind Foscari unlocks |
| Mini Crewmates (all) | Emergency Meeting DLC; tied to crewmate-specific unlocks |
| Weapon Power-Up | Operation Guns DLC; selectable only through specific gun-themed mechanics |
| All Familiars | Ode to Castlevania DLC; pickable from Familiar Forge weapon instead |
| Outer Saboteur | Ante Chamber DLC; reserved for Ante Chamber-specific selection |
From our experience, the four Ring and Metaglio exclusions are the most build-relevant because they block the two most powerful evolution chains in the base game (Infinite Corridor and Crimson Shroud) from being completed via Arma Dio. Players who hope to use Arma Dio to short-circuit a Crimson Shroud build need to find Gold Ring through level-ups instead.
The right pick depends on your build's current state. From our experience, the priority order looks like this:
If your highest-leveled weapon is at level 7 or 8 and the only thing blocking its evolution is the matching passive, take that passive immediately. 
Spinach for Cherry Bomb (evolves to Carrera!), 
Empty Tome for Magic Wand (evolves to Holy Wand), and 
Bracer for Knife (evolves to Thousand Edge) are common picks here. Arma Dio delivers the passive at level 1, which is enough to trigger an evolution if the matching weapon is already at max level and the chest spawns post-minute-10.
If no evolution is gated by a missing passive, take a passive that scales every weapon at once. 
Duplicator (extra projectile per cast) and 
Crown (Growth scaling for level-ups) are the two highest-impact picks because they multiplicatively buff your entire build rather than a single weapon. 
Clover is a strong third pick on Luck-scaling weapons like Gale Force, Raging Fire, or Santa Javelin.
For runs heading into endless mode (post-minute 30), 
Pummarola for sustained regen is a stronger pick than damage scaling. The endless health pressure scales sharply past minute 35, and free Pummarola from Arma Dio effectively replaces a Tirajisu Revival for one less death.
Always check what your build is missing BEFORE walking onto an Arma Dio pickup. The picker menu pauses the game, but the layout of available passives changes based on what you have already collected. From our experience, players who walk over the pickup without a plan often pick the first item they recognize, leaving stronger picks like Crown or Duplicator on the table.
According to the wiki, the run-defining arcana for Arma Dio is Hail from the Future (X). The wiki notes the arcana spawns up to seven Arma Dios per run, which is the only way in v1.13 to receive more than one or two passive selections from Arma Dio in a single attempt. Combined with high Luck (which multiplies Arma Dio's base rarity directly), Hail from the Future (X) turns any run into an effective full-passive-sweep run.
For weapon synergies, 
Candybox is the standout. Per the wiki, Arma Dio can be selected from the Candybox picker menu, allowing layered selector chains. From our experience, that opens a 7th-passive interaction: take Candybox first, use Candybox to select Arma Dio, then collect the resulting Arma Dio pickup to open another passive picker. Combined with running Silent Old Sanctuary (XX) to limit the weapon slots used, the chain produces unconventional builds with more passives than the standard six.
Per the wiki, 
Santa Ladonna also has a unique interaction: reaching character level 40 with her spawns a free Arma Dio on the stage. That makes Santa Ladonna the only character with a guaranteed Arma Dio drop independent of stage-specific pickups, which is why high-Luck Santa Ladonna runs are commonly used for full-passive-sweep attempts.
Crown or evolution-enabling passives.Per the wiki, "Arma Dio" roughly translates from Italian as "God Weapon," but the developers built in a layered pun: "Armadio" (no space) is the Italian word for "cabinet" or "wardrobe." The name plays on both meanings simultaneously, which is consistent with the weapon's mechanic. Collecting Arma Dio opens a "cabinet" of passive items to choose from, while the "God Weapon" framing reinforces how powerful a free 7th passive can be when used correctly.
The Forbidden Scrolls of Morbane unlock spell extends the joke. Per the wiki, "apritisedano" is a phonetic Italian spelling of "apriti sedano," which translates to "open, celery." That is itself a corruption of the more familiar Italian phrase "apriti sesamo" (open sesame), the magic command from the Ali Baba folktale used to open the cabinet of treasures. The name, the spell, and the picker-menu mechanic all reinforce the same cabinet-of-treasures metaphor, with celery substituted for sesame as a deliberately silly mistranslation. From our experience, this layered Italian wordplay is consistent with Vampire Survivors' broader naming pattern (Tirajisu, Pummarola, La Borra, Carrello) where Italian food and idioms recur as Easter eggs throughout the game.
Per the wiki, there are five paths. Collect it in Laborratory by hitting north levers, find pre-placed pickups on Neo Galuga or Ode to Castlevania stage maps, reach character level 40 as Santa Ladonna, or cast the "apritisedano" spell in the Forbidden Scrolls of Morbane menu. The Laborratory and Forbidden Scrolls paths require no DLC.
It opens a passive-item selection menu when collected. Per the wiki, the menu lists every passive still available in your run (with nine specific passives excluded), and the player picks one to receive at level 1 in a free passive slot. It does not deal damage and has no offensive stats.
No. Per the wiki, Arma Dio's max level is 1 and it has no evolution path. It exists purely as a one-shot weapon selector that consumes itself when used.
Yes. Per the wiki, the Hail from the Future (X) arcana spawns up to seven Arma Dios per run. The Ode to Castlevania stage also has four pre-placed pickups, and Neo Galuga has three. With Luck stacked, a single run can produce a full-passive-sweep ceiling.
Per the wiki, nine passives are excluded: Silver Ring, Gold Ring, Metaglio Left, Metaglio Right, Academy Badge (Tides of the Foscari DLC), all Mini Crewmates (Emergency Meeting DLC), Weapon Power-Up (Operation Guns DLC), all Familiars (Ode to Castlevania DLC, pickable from Familiar Forge instead), and Outer Saboteur (Ante Chamber DLC). The Ring and Metaglio exclusions block Crimson Shroud and Infinite Corridor short-circuits.
Per the wiki, Arma Dio's pickup rarity is multiplied directly by the Luck stat. High-Luck builds see Arma Dio drop more frequently when running stages that contain it. That is why Santa Ladonna (+30% Luck opener) and Christine Davain are the most common characters used for full-passive-sweep runs.
Yes. Per the wiki, Candybox can include Arma Dio in its selection pool, allowing layered selector chains. The wiki notes this is not generally recommended unless you are running Silent Old Sanctuary (XX) to limit weapon count, since it does not benefit a build with all six weapon slots already filled.
Yes on Luck builds, evolution-stuck builds, and endless runs heading past minute 30. Skip on Silent Old Sanctuary (XX) limited-weapon builds where extra passives do nothing for your damage. See our weapon tier list for the full ranking and our passive items guide for which passive to pick from the menu.
For other base-game weapons, see our Pentagram guide covering the screen-clear archetype, our Glass Fandango guide covering the EXTRA weapon pool, and our Gaze of Gaea guide. For Castlevania DLC weapons, see our Raging Fire guide, Gale Force guide, Hand Grenade guide, Alchemy Whip guide, and Rock Riot guide. The weapon tier list ranks every weapon in v1.13 and the weapon evolution chart covers every recipe. The passive items guide walks through every passive Arma Dio can grant, and the arcanas guide covers Hail from the Future (X). For character spokes that synergize with Arma Dio, see our Soma Cruz guide, Leon Belmont guide, and Richter Belmont guide. The main Vampire Survivors guide is the hub for everything else.
Image sprites and screenshots sourced from the Vampire Survivors Wiki (vampire.survivors.wiki) under CC BY-NC-SA 3.0.