Summon Tentacle

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Summon Tentacle is a spell that calls forth a tentacle from a casting point attached to you or whichever spell triggers it. It has a special interaction with projectile and items if certain modifiers are attached (see Summon Tentacle#Special Interaction interaction below if interested). It is not affected by Homing and will always fire in a straight line.

It will not damage crates or barrels by itself.

Also has a timer variant.

Tips

  • Projectile Eater will stop Summon Tentacle from firing at certain angles.
  • Casting a tentacle with the Matter Eater modifier will localise the terrain-destroying effect on the casting position for the duration of the effect, allowing you to tunnel through the ground like a worm. This digging effect is even faster (but only reliable when standing still to dig/drop downward) when paired with Projectile Energy Shield.
  • Plasma Beam Orbit will damage enemies but not you.
  • Tentacle With Timer will normally drop its payload at zero or near-zero velocity; this may cause certain types of projectiles to immediately disappear. Modifying the tentacle with Floating Arc, Anti-Gravity, or Gravity can fire the payload off at a medium to high initial velocity instead. (Floating Arc's velocity modifications are dependent on the caster's position relative to terrain.)
  • When in the payload of an Expiration Trigger spell, the tentacle will originate from the caster rather than the trigger projectile, unless the tentacle's lifetime has been modified to be zero or negative or the caster is unknown. The former can be used to near-immediately release a secondary payload at the caster's location by setting the Expiration Trigger's payload to a Tentacle With Timer modified by two Reduce Lifetimes and one Orbiting Arc/Ping-Pong Path, which will normally have a one-frame lifetime. In the latter case, tentacle will be balled up and fly off from the expiration trigger.
  • When modified by Auto-Aim, Matter Eater, or orbiting-projectile modifiers such as Orbit Larpa (see wand designs below), Tentacle With Timer or Add Expiration Trigger + Tentacle will release its payload (and cause arc modifiers such as Electric Arcs to originate from) its "root", rather than the end of the tentacle. The "root" can be you if the Tentacle was cast directly or in the payload of an Expiration Trigger projectile, or a non-Tentacle Trigger/Timer projectile that held a Tentacle or chain of Tentacles with Triggers/Timers as its payload. If the root no longer exists (e.g., if it was a Trigger projectile that was just destroyed), then the Tentacle will not appear. Projectile Energy Shield has a similar effect as these other modifiers, but launches the payload from underneath the caster or near a root projectile.
  • Upon adding a tentacle to a trigger spell, firing the spell into terrain will not summon a tentacle unless the trigger spell bounces or otherwise remains alive, which can be accomplished, e.g., by adding Bounce. If the trigger spell hits an entity that is a physical object (holy mountain statues, explosive canisters etc), a tentacle will be fired off that does damage. Using a timer spell will fire the tentacle from the spell when the timer activates. Using a spell with an expiration trigger will cause the tentacle to be fired from you when the spell expires, Long-Distance Cast, Teleporting Cast, and Warp Cast have a similar reaction, all of which firing the tentacle from you, seemingly having no effect.
  • Certain projectile modifiers applied to the Tentacle will actually apply effects to its root instead, or be influenced by the root in more complicated ways. These special projectile modifiers include Quantum Split, Larpa spells, Spells to Power, Essence to Power, Nolla, Remove Explosion, Plasma Beam Enhancer, Concentrated Explosion, Remove Bounce, Projectile Area Teleport, Homing (cosmetic), and Accelerative Homing (cosmetic). Orbit Larpa will try to create orbit projectiles based on the root (if it is a projectile) orbiting around the tip of the Tentacle. Essence to Power and Spells to Power apply damage boosts to the tentacle, but apply particle effects to the root; Spells to Power will not convert the root to power and will forbid the root, rather than the damage-boosted Tentacle, from being converted by other instances of Spells to Power, at least when the root is a projectile rather than you; see applications here.
    • When modifiers above were added to a trigger spell's payload, modifers will apply effects to the trigger spell instead. Additionally, each time it triggers tentacle with modifiers, it applies modifiers again to the trigger spell.
  • Certain projectile modifiers applied to the Tentacle will actually apply effects to or be influenced by its direct parent instead. For example, while Piercing Shot applies its damage modifier and friendly fire to the shot state, its piercing effect is applied to the parent projectile if there is one; e.g., with Spark Bolt With Timer, Piercing Shot, Tentacle, the spark bolt will gain the piercing effect, while the tentacle will have the damage modifications and friendly fire.
  • Certain projectile modifiers applied to a Tentacle will also apply to its root and other tentacle "ancestors" while the modified tentacle(s) is/are alive. These modifiers include Critical On Oiled Enemies and similar modifiers[1] and Venomous Curse[2].

Special Interaction

Click to show content

At certain velocities, a summoned tentacle will noticeably interact with projectiles and dropped objects. (cough, that's some nice spells you've got laying around this holy Mountain, ain't it, cough)

This can be achieved with the use of speed multipliers such as speed up, light shot, decelerating shot, or even anti-gravity.(explanation further down)

The form this interaction takes will differ based on the velocity and lifetime of the spell, but it can be summarised with one term 'velocity injection.'

The following is speculation based on experimentation, and has not been verified by the games code.

When the spell first takes place, it triggers an initial generation of the spell's sprites and script.

The sprites are generated from the point where Noita's sprite holds the wand, rather than the tip of the wand, this is because the script needs a sprite to keep track of the start point and adjust the spell's sprite accordingly, and changing wands would cause the script to lose track of the attached sprite, this also leads to some buggy behaviour when it is cast from some spells with an expiration trigger, as the start point is either destroyed along with the expired projectile or designated at the caster.

Piercing Shot on the trigger spell, combined with Homing should mitigate this effect, though even without the sprite, the script may still deal damage. So can other ways of releasing trigger payloads without destroying the projectile, such as Add Trigger on naturally piercing projectiles, or firing bouncing trigger projectiles against terrain.

The script then scans the main sprite and hooks it before injecting velocity, generating sprites (terrifying but harmless) trailing behind it. The script does this injection process in two batches, one singular time towards the coordinates of the mouse cursor, and repeatedly towards the casters current position once it reaches its extension limit, which is limited only based on the initial velocity from the start point.

One interesting point to note is that the spells script does not seem to have a velocity limit, but it does have a custom hard coded collision checker max distance between, that can be reached with approximately three of any combination of light shot and decelerating shot, this means that provided this collision check doesn't touch anything, the projectile can go through walls and deliver a payload of modifier effects or if using the timer variant it could even deliver spells. Do note that this collision check requires a deal of precision to hit anything in particular as it is also responsible for registering hits and not just distance.

This leads to the apparent thievery of unrelated items and spell sprites at the position of the main projectile, any speed faster than the resistance applied to an affected projectile or item will result in an injection of noticeable velocity ...TOWARDS YOU!!!

Holy Mountain#Stealing spells from the shop

As such, even a single anti-gravity modifier is enough to demonstrate an effect, levitating an item before dropping it back down, and excluding adding a decrease lifetime to expire the tentacle before it reaches its extension point, this is the safest method of using this spell. Or just use a freeze charge light shot combo to decimate anything vulnerable to melee damage while frozen ...so .. maybe most of the enemies in the game ...hmm ...nice

This effect will differ from wand to wand due to their inherent speed modifiers, 'so doth be advised to carefully experiment, lest thy holy grenade to be deposited besides thy foe, be yeeted back into thy face' - An Anonymous Noita

An accurate method of seeing the collision check for precision practice is to use a Black Hole to create a long and straight tunnel, and use a Freeze Charge modifier on the spell.

Modifiers that are confirmed to change the frequency of the collision check are Phasing Arc and Piercing Shot.

Keep note that while the distance can be accurately changed with modifiers, it will also vary between different wands, so a safe or effective distance on one wand may become unsafe or ineffective if you switch the same spells to a better wand.

Stealing spells from the shop - NOTE: Since early 2023 this requires digging out some of the ceiling; see Holy Mountain#Stealing spells from the shop.
Grabbing a projectile
Wand Appearance with Tentacle x3.

Advanced Guides

Spells To Power

Spells To Power can repeatedly absorb itself with Tentacle With Timer, which can cause the damage exponential increase. Spells to Power scales with projectile and explosion damage, so the damage modifier can be anything that adds those types. Divide by 10 can be replaced with Divide by 4 for less lag. Warning: If this combo has negative damage, spells to power creates an infinite loop that freezes the game. Make sure you add enough damage if you use damage reducing spells like divides.

Wand 0821.png
Shuffle
No
Spells/Cast
1
Summon Tentacle With Timer
Heavy Shot
Spells To Power
Divide By 10
Omega
Summon Missile

With copy random spells and without divide by spells. Also less lag.

Wand 0821.png
Shuffle
No
Spells/Cast
1
Double Spell
Summon Missile
Summon Tentacle With Timer
Triple Spell
Heavy Shot
Spells To Power
Copy Three Random Spells
Copy Random Spell Thrice
Omega

Alternative wand build for less lag and spell storage.

Wand 0821.png
Shuffle
No
Spells/Cast
1
Summon Tentacle With Timer
Heavy Shot
Spells To Power
Recoil Damper
Divide By 2
Divide By 4
Spell Duplication
Requirement - Every Other
Weakening Curse - Projectiles
Summon Missile
Wand Refresh
Requirement - Endpoint

Infinite damage and infinite lifetime note spell wand build.

Wand 0821.png
Shuffle
No
Spells/Cast
1
Double Spell
Spark Bolt With Timer
Triple Spell
Divide By 10
Divide By 10
Divide By 4
Add Trigger
Spells To Power
Heavy Shot
Recoil Damper
Blood Magic
Summon Tentacle
Summon Tentacle
Spark Bolt With Timer
Drilling Shot
Spells To Power
Divide By 3
Reduce Lifetime
Divide By 2
Increase Lifetime
Chain Spell
Chain Spell
Homing
Boomerang
Kantele - Note A

Higher cast speed build. Cast delay and Recharge.Time should be consistent with the build, otherwise the casting speed will be reduced.

WAND

Wand 0821.png
Inventory Icon gun shuffle.png Shuffle
No
Inventory Icon gun actions per round.png Spells/Cast
1
Inventory Icon fire rate wait.png Cast delay
-0.35 s
Inventory Icon gun reload time.png Rechrg. Time
-0.35 s
Inventory Icon mana max.png Mana max
800
Inventory Icon mana charge speed.png Mana chg. Spd
420
Inventory Icon gun capacity.png Capacity
24
Inventory Icon spread degrees.png Spread
0.00 DEG
Inventory Icon speed multiplier.png Speed
× 1.0
Blood Magic
Blood Magic
Triple Spell
Glowing Lance
Spark Bolt With Timer
Requirement - Every Other
Double Spell
Divide By 2
Summon Tentacle
Tau
Divide By 10
Add Trigger
Heavy Shot
Recoil Damper
Spells To Power
Aiming Arc
Accelerating Shot
Requirement - Otherwise
Add Trigger
Weakening Curse - Projectiles
Spells To Power
Bouncing Burst
Requirement - Endpoint
Wand Refresh

Orbit modifiers

When used with Orbit modifiers, the tentacle will become a "child entity" and always stick to Minä. When Minä dies or is polymorphed, the tentacle expires. Guide To Infinite Lifetime Spells is a good way to use it. Spells to spells can remove the tentacle.

Wand 0821.png
Shuffle
No
Spells/Cast
1
Divide By 2
Divide By 3
Reduce Lifetime
Reduce Lifetime
Divide By 10
Ping-Pong Path
Orbit Larpa
Lava To Blood
Add Expiration Trigger
Summon Tentacle
Projectile Transmutation Field

Plasma Beam Orbit

A Plasma Beam Orbit will also not harm you, and can be made into plasma armor

Wand 0821.png
Shuffle
No
Spells/Cast
1
Triple Spell
Plasma Beam Orbit
Increase Lifetime
Add Trigger
Orbiting Arc
Chain Spell
Add Trigger
Reduce Lifetime
Blood Magic
Add Expiration Trigger
Damage Field
Summon Tentacle
Spark Bolt
Plasma armor - by Letaali

Plasma Tentacles

If you favour a more aggressive playstyle, you can make the tentacles hold balls of plasma as they flail around you. While still being (in comparison to most other uses of plasma) relatively safe, be wary of all the things the tentacles may bring toward you, enrage or otherwise interfere with.

This is as much fun as it looks.

All you need to get started with this effect are Summon Tentacle and Plasma Beam Orbit, but this basic build is a good starting point (any Add Trigger variant works):

Wand 0821.png
Shuffle
No
Spells/Cast
1
Add Trigger
Floating Arc
Plasma Beam Orbit
Summon Tentacle
Add Mana
Chainsaw

This is a great build to incorporate into a travel wand, for example (first trigger must be expiration):

Wand 0821.png
Shuffle
No
Spells/Cast
1
Add Expiration Trigger
Reduce Lifetime
Small Teleport Bolt
Add Trigger
Floating Arc
Plasma Beam Orbit
Summon Tentacle
Add Mana
Chainsaw

Pollen Feeback Loop Whisp

These builds are capable of keeping the chunk they are placed in loaded without relying on other entities, by abusing the mechanics of the Summon Tentacle spell.

Wand 0821.png
Shuffle
No
Spells/Cast
1
Tau
Divide By 3
Reduce Lifetime
Divide By 10
Orbiting Arc
Piercing Shot
Add Trigger
Summon Tentacle
Add Expiration Trigger
Spiral Shot
Add Expiration Trigger
Pollen
Reduce Lifetime
Reduce Lifetime
Orbit Larpa
Summon Tentacle With Timer
Invisible Spell
Nolla
Circle of Vigour
Bubble Spark With Trigger


The above wand build simplified by using Inner Spell.

Wand 0821.png
Shuffle
No
Spells/Cast
1
Tau
Divide By 3
Reduce Lifetime
Divide By 10
Orbiting Arc
Piercing Shot
Add Trigger
Summon Tentacle
Add Expiration Trigger
Spiral Shot
Add Expiration Trigger
Pollen
Inner Spell
Invisible Spell
Nolla
Circle of Vigour
Bubble Spark With Trigger

See also: Expert_Guide:_Waypoints#Self-loading_waypoints

Gallery

Testing Summon Tentacle in a Holy Mountain.
Attacking an enemy with Summon Tentacle.

History