Arum Spinosa is an 
Infested Warfan that shoots 
Toxin projectiles on Heavy Attack.
Characteristics[]
This weapon primarily deals 
Slash damage.
Advantages:
- Heavy Attacks throw toxic spines, with each spine doing 70 base damage.
- The first heavy attack throws 18 spines, each with a 2.5x damage multiplier; the second heavy attack in sequence throws 9 spines, each with a 5x damage multiplier,
- Damage of the spines are affected by mods.
- Spines are considered a heavy attack. Their damage will scale from the combo counter and mods such as
Killing Blow. - Spines have innate Punch Through.
- Spine damage does not diminish with distance.
Disadvantages:
- Heavy Attack spines:
- Has a travel time.
- Has a limited range of ~35 meters.
- Cannot use Thrown Melee mods Combo Fury, Power Throw, Quick Return ( Volatile), Rebound ( Volatile), and Whirlwind.
- Below average critical chance.
Acquisition
The Arum Spinosa's blueprint and components can be acquired from Tier 2 (Lvl 40-50) Isolation Vault Bounties (normal and Arcana). The blueprint and all components can be traded.
| Source | Chance | Expected | Nearly Guaranteed |
|---|---|---|---|
| Main Blueprint (Normal - Final Stage) |
6.25% | 61 – 62 Final Stages | 342 ± 114 Final Stages |
| Guard (Normal - Final Stage) |
3.75% | ||
| Rivet (Normal - Final Stage) |
2% | ||
| Main Blueprint (Arcana - Stage 1) |
12.5% | 8 Stage One's | 52 ± 17 Stage One's |
| Main Blueprint (Arcana - Stage 2) |
7.81% | 26 – 27 Stage Two's | 144 ± 48 Stage Two's |
| Guard (Arcana - Stage 2) |
4.69% | ||
| Main Blueprint (Arcana - Stage 3) |
7.81% | 26 – 27 Stage Three's | 144 ± 48 Stage Three's |
| Guard (Arcana - Stage 3) |
4.69% | ||
| Guard (Arcana - Final Stage) |
7.5% | 29 – 30 Final Stages | 169 ± 56 Final Stages |
| Rivet (Arcana - Final Stage) |
4% |
All drop rates data is obtained from DE's official droptables.
Expected refers to total number of attempts a player can expect to need in order to receive at least one of each drop associated with the respective values.
Nearly Guaranteed refers to the total number of attempts a player needs to obtain a 99%, 99.9%, and 99.99% probability to receive at least one of each drop associated with the respective values.
For more detailed definitions and information on how these number were obtained, visit here.
| Manufacturing Requirements | |||||
|---|---|---|---|---|---|
 5,000 |
 2 |
 1 |
 1 |
 1 |
Time: 12 hrs |
Rush:  35
| |||||
 Market Price: N/A
|
 Blueprints Price:N/A
| ||||
Notes[]
Trivia[]
- The name of the weapon may have come from the English word "Arum", and Italian word "Spinoso".
Media[]
Patch History[]
Hotfix 29.6.2 (2020-12-22)
- Fixed issues with colour customizations not saving on the Arum Spinosa projectiles.
Hotfix 29.5.9 (2020-12-15)
- Sporothrix and Arum Spinosa Blueprints are now tradable!
To balance out the Weapon Blueprint drop % reduction we’ve made the Sporothrix and Arum Spinosa Blueprints tradable. The Sporothrix and Arum Spinosa parts were already Tradable, but it’s now one step further.
Hotfix 29.5.3 (2020-11-23)
- Fixed the actual base Blueprint for the new Arum Spinosa not being in Rotation A of Deimos: Arcana Bounties. Arum Spinosa Blueprint is now in Rotation A at 18%.
Update 29.5 (2020-11-19)
- Introduced.
