The Basmu is a Sentient rifle that fires rounds dealing 
Electricity damage on impact and explodes in a 1.7 meter radius for 
Heat damage. The Alternate Fire channels two beams of Electricity that conducts between targets, with its extreme critical multiplier offset by its low critical chance. When the battery is drained, the weapon releases a 10 meter pulse that staggers enemies and siphons health from them.
Acquisition
Edit
The blueprint can be purchased from Little Duck on the Scarlet Spear Flotilla Relay during Operation: Scarlet Spear for 15,000 Scarlet Credits.
| Manufacturing Requirements | |||||
|---|---|---|---|---|---|
 25,000 |  1,500 |  800 |  450 |  1 | Time: 24 hrs |
Rush:  35
| |||||
 Market Price: N/A
|  Blueprints Price:N/A
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CharacteristicsEdit
This weapon deals primarily Electricity damage.
Advantages:
- Primary fire shoots explosive rounds.
- Shots have innate Electric damage – effective against Machinery and Robotic.
- Good critical chance.
- Very high status chance.
- Shots explode in a 1.7-meter radius after impacting a surface or enemy.
- Explosion has innate Heat damage – effective against Cloned Flesh, Infested, and Infested Flesh.
- Explosion can benefit from Firestorm and Cautious Shot.
- Explosion has innate
- Shots have innate
- Alternate Fire shoots two continuous beams.
- Innate Electric damage – effective against Machinery and Robotic.
- Highest critical multiplier of all primary weapons.
- Very high status chance per beam.
- Heavy Caliber's accuracy penalty is minimal.
- Beam can chain up to 5 nearby enemies within 7 meters from the initial target.
- Enemy corpses will still allow the beam to connect to nearby enemies.
- Consumes 0.5 ammo per tick of damage.
- Innate
- High fire rate.
- Fully depleting the magazine produces three 10-meter pulses that deals up to 10 True damage, staggers nearby enemies and heals the user's health by 10x the damage done to each enemy per pulse.
- Does not use ammo pickups; ammo regenerates over time.
- Has a 2-second delay from empty before ammo begins to regenerate. If there are still rounds left, the delay is 0.2 seconds instead.
- Regenerates 42 ammo per second; takes 0.5 seconds to regenerate a fully depleted battery excluding the delay.
- Has a 2-second delay from empty before ammo begins to regenerate. If there are still rounds left, the delay is 0.2 seconds instead.
- Innate polarity.
Disadvantages:
- Primary Fire:
- Shots have innate Electric damage – less effective against Alloy Armor.
- Projectiles have travel time.
- Explosion has innate Heat damage – less effective against Proto Shields.
- Explosion inflicts self-stagger.
- Explosion has linear damage falloff from 100% to 80% from central impact.
- Shots have innate
- Alternate Fire:
- Innate Electric damage – less effective against Alloy Armor.
- Extremely low critical chance.
- Damage ramps up from 20% to 100% over 0.6 seconds when firing. After firing stops for 0.8 seconds, the damage decays back to 20% over 2 seconds.
- Limited range of 9 meters.
- Cannot equip Sinister Reach.
- Cannot equip
- Cannot equip Combustion Beam.
- Innate
- Damage cannot be increased with Impact, Puncture or Slash mods.
- Pulse will only activate if the user is on the ground, and will terminate early if the user jumps, rolls or slides.
- Pulse has linear damage falloff from 100% to 0% from center.
- Low magazine size in contrast to its high fire rate.
NotesEdit
- Pulse damage is affected by base damage mods (e.g. Serration, Heavy Caliber).
- Upon fully depleting the weapon's magazine, one healing pulse is released immediately, then releases additional pulses every 0.4(?) seconds.
- The time between pulses is not effected by reload speed, meaning decreasing reload speed (and thus increasing reload time) results in more pulses, while increasing reload speed results in less pulses.
TipsEdit
- The Basmu reloads significantly faster when the magazine has not been emptied.
- When not in the need of healing it is recommended to stop firing just before the magazine is empty to increase offensive capabilities.
- There are several ways to make use of the alternate fire's high critical multiplier by adding flat critical chance bonuses:
- An Adarza Kavat with Cat's Eye can give your weapons an additive 60% boost to critical chance.
- Likewise, Smeeta Kavat's Charm can guarantee orange crits as one of its possible effects.
- Harrow's Covenant can add up to +50% additive crit chance, or +200% on headshots, after absorbing enough damage.
- A fully ranked Arcane Avenger will grant a +45% flat critical chance buff when your frame is hit.
- An Adarza Kavat with
TriviaEdit
- The Bašmu is an ancient Mesopotamian mythological creature, a horned snake with two forelegs and wings.
BugsEdit
- Primary fire is treated as silent.
- Using roll with Amalgam Barrel Diffusion will retrigger the pulse from reloading the basmu, allowing it to continuously pulse when the roll is timed with the 1st or 2nd pulse.
- There was a bug that did -2 billion damage to enemies when the reload was slowed down enough and multiple synergize for crit were being used like the Adarza, crit mods and riven with slower reload speed. Even though it was negative damage it instantly obliterated anything in range. The glitch has since been fixed.
MediaEdit
Basmu concept art alongside other unreleased sentient weapons.
Warframe Concept Art - Weapons
Patch HistoryEdit
Hotfix 27.5.3
- Fixed the Basmu reload not providing Health if you’re the Client.
- Reduced the Basmu’s firing sound FX from other players.
- Fixed inability to equip Flight Speed Mods, such as Terminal Velocity, on the Basmu.
- Fixed the Basmu's healing pulse receiving exponential copies of equipped Mods with each pulse when under the effect of some conditional buffs, which led to unintended amounts of damage.
- Fixed becoming invincible when interrupting the Basmu reload and Transferring to the Operator and using Unairu Void Spines.
- Another fix towards all future Basmu damage dealing lifesteal to enemies if the ‘heal on reload’ is interrupted as a Client.
- Removed the replication of the Basmu reload Health FX so that only the user will see the FX to aid in performance.
- Fixed the Basmu reload FX being visible while invisible.
- Fixed the Basmu Alt Fire mode not healing on reload.
- Fixed all future Basmu damage dealing lifesteal to enemies if the ‘heal on reload’ is interrupted. This had to be timed very correctly by actions such as Transferring to the Operator, casting Abilities, etc.
- Introduced.
Last updated: Update 27.3
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