Aniimo · Held Item
Fission Needles
Base effect
+10% Damage Amp
Builds
2 recommended builds
The Fission Needles is a Legendary held item, called a carried item in the beta, one of the 24 in Aniimo and the single piece of equipment an Aniimo takes into battle. Its Base effect grants Damage Amp +10%. Its Core effect: Each basic attack has a 50% chance to deal double damage. Every source the game lists for it, the numbers behind all 3 rarities and the builds that actually run it are below.
Fission Needles effects
Base effect
Damage Amp +10%
The flat stat the item grants on its own, applied the moment it is equipped. It is +3% at Rare, +5% at Epic, +10% at Legendary.
Core effect
Each basic attack has a 50% chance to deal double damage.
The item’s signature line, and the half that decides which Aniimo wants it. It does not change with the rarity.
Rarities of the Fission Needles
| Rarity | CP | Base effect | 10 energy | 20 energy |
|---|---|---|---|---|
| Rare | 50 |  Damage Amp +3% | None | None |
| Epic | 100 | Damage Amp +5% | Restores 1 EP when triggered. | None |
| Legendary | 200 | Damage Amp +10% | Restores 1 EP when triggered. | If EP is full, increases basic attack damage by 30% for 10s. |
The Core effect is the same at all 3 rarities: Each basic attack has a 50% chance to deal double damage. What changes with the rarity is the combat power, the size of the Base effect and how many energy effects are unlocked.
How to obtain the Fission Needles (2)
The game lists 2 sources for the Legendary Fission Needles: defeating Alphas and the Pawprint Shop.
Defeat Alphas
The Legendary Fission Needles is listed as a possible reward at these player ranks:
Veteran Wayfarer
Beginner Trailblazer- Intermediate Trailblazer
- Veteran Trailblazer
How to use the Fission Needles
The Core effect pays out on basic attacks: each one has a 50% chance to deal double damage. It is tied to the basic attack rather than to a skill, so it wants an Aniimo that spends real time attacking rather than one built around a single skill window.
10 other held items share the Damage Amp Base effect: Ferocious Fang, Explosive Gloves, Ambusher's Cloak, Capacitous Battery, Destiny's Dice, Echoing Grimoire, Finisher Bell, Heartseeker Pendant, Supreme Elixir, Vanguard's Whistle. The Core effect is what separates them.
Aniimo whose recommended build carries the Fission Needles (2)
Tier list →2 of the 88 in-game recommended builds on this site list the Fission Needles. Each Aniidex page opens on its Build tab with the full setup.
Other held items
All 24 held items →
Keep exploring
Aniilog
The full Aniidex
Every Aniimo with official base stats, skills and its in-game recommended build.
Idyll
Interactive map
Every Alpha spawn, chest and Bloom on the map, tracked as you find them.
Database
All Aniimo Runes
The rune layer the game shipped without: 12 stat lines in four tiers.
Fission Needles FAQ
What does the Fission Needles do in Aniimo?
The Fission Needles is a Legendary held item. Its Base effect grants Damage Amp +10%. Its Core effect, the reason to equip it: Each basic attack has a 50% chance to deal double damage. Both apply from the single equipment slot every Aniimo has, since runes were removed from the game at launch.
How do you get the Fission Needles in Aniimo?
The game lists 2 sources for it: defeating Alphas and the Pawprint Shop. The Alpha drop comes from Irisal, and the Legendary version is listed as a possible reward at the 4 player ranks from Veteran Wayfarer upwards.
Which Aniimo should carry the Fission Needles?
2 of the 88 in-game recommended builds on this site carry it, including Fenmane, Fentuft. The Base effect points it at DPS Aniimo, and each Aniidex page shows the full setup in its Build tab.
What tiers does the Fission Needles come in?
3: Rare, Epic, Legendary. They are the same item with different numbers behind it: Rare is 50 CP and Damage Amp +3%, Epic is 100 CP and Damage Amp +5%, Legendary is 200 CP and Damage Amp +10%. Only the Legendary version carries the 20 energy effect.
The item name, Base effect, Core effect and tiers are read off the in-game recommended build panel shown on each Aniidex entry. The per-rarity CP, Base values, energy effects and obtain sources on this page are checked against the official item table via Aniidex, and Alpha spawns against our own map of Idyll, re-checked on 10 September 2026. The build count is derived from the 88 recommended builds published on this site. Compiled by Lorenzo Bruno (Yieng), about this site. Game assets © Pawprint Interactive Entertainment Pte. Ltd. This is an unofficial fan resource.