Aniimo · Held Item
Vanguard’s Whistle
Base effect
+10% Damage Amp
Builds
0 recommended builds
Base effect · every attack
Damage Amp +10%
Core effect · what sets it apart
Increases Final Damage by 25% against targets above 70% HP.
How held items work →What the Vanguard’s Whistle is for
The Core effect is the mirror of the Finisher Bell: Final Damage +25% while the target is above 70% HP, and nothing after that. It opens fights rather than closing them, which suits an Aniimo swapped in for the first burst.
The Vanguard’s Whistle in numbers
The Core effect is the opening of a fight rather than the end of it: a fixed slice off the top of the health bar. Costing the bar out says what the slice is worth.
94.0
Damage needed to clear a 100-point bar, Core effect alone
The top 30 points arrive 25% larger and the rest are unchanged: (100 − 70) ÷ 1.25 + 70. That is 6% off the bar.
92.0
With the 10 energy line widening the window to 60%
(100 − 60) ÷ 1.25 + 60, so 8% off the bar.
91.7
At Legendary with both energy lines
The first 10 points arrive 30% larger, the next 30 arrive 25% larger, the last 60 are unchanged: 8.3% off the bar.
The figures assume damage per hit is otherwise constant across the bar, and count neither the guaranteed critical the 15 energy line grants above 90% nor any crit damage behind it, which the item does not print.
The Vanguard’s Whistle at each rarity
| Rarity | CP | Base effect | 10 energy | 15 energy |
|---|---|---|---|---|
| Rare | 50 | Damage Amp +3% | – | – |
| Epic | 100 | Damage Amp +5% | Lowers the HP requirement for Damage Boost to 60%. | – |
| Legendary | 200 | Damage Amp +10% | Lowers the HP requirement for Damage Boost to 60%. | Against enemies above 90% HP, Damage Boost increases to 30% and this attack is a guaranteed crit. |
How to get the Vanguard’s Whistle (3)
The game lists 3 sources for the Legendary Vanguard’s Whistle: defeating Alphas, an Other chest and the Pawprint Shop.
Also listed (2)
- Defeat Alphas
- Other chest
Named by the game, placed nowhere on the map.
The item table names no Alpha in particular for it, so there is no spawn to mark on the map of Idyll.
Which Aniimo carries the Vanguard’s Whistle
Aniidex →No in-game recommended build names it, so there is nobody to list. Its Base effect points it at DPS Aniimo.
Closest rivals for the Damage Amp slot
All 11 →| Item | Core effect | Builds |
|---|---|---|
 Ferocious Fang | Equipped Aniimo gain 0.7 additional ATK per level. | 34 |
 Explosive Gloves | Increases Damage Amp by 5% for every 10 EP currently available. | 3 |
 Fission Needles | Each basic attack has a 50% chance to deal double damage. | 2 |
All 11 grant +10% Damage Amp at Legendary, so only the Core effect separates them. These are the 3 the in-game builds pick most often; the other 7 are on the hub.
Effects, rarities, CP and sources: the game’s own data files. Every figure in the numbers section is computed here from those strings and shows its working. Compiled by Lorenzo Bruno (Yieng): full provenance, about.