What is the Iridescent Ulphantom?
The Iridescent Ulphantom is a rare, elemental variant appearing for a limited 7-day window. Known in-game as an altered Prismana/Iridescent form, this creature features a fiery, dark aesthetic with boosted base stats and unique elemental drop materials used for high-tier Nurturing and RV facility crafting.
【虹色ウルファントム、期間限定で出現!】 復讐の炎は、その身さえも焼き尽くす——。 尽きることのない執念は、やがてその身を焦がす烈火へと変わる。 10月12日~10月18日の期間中、 ムラクモ草原に限定の「虹色ウルファントム」が出現! 「虹色天象」が発生すると、虹色ウルファントムに出会えるチャンス! この機会をお見逃しなく! ※虹色ウルファントムの出現期間中、ムラクモ草原に通常出現する虹色モコモッコは一時的に出現しなくなります。 #アニモ
— アニモ(Aniimo)公式 (@Aniimo_JP) October 11, 2026
Event Dates & Global Schedule
- Start Date: October 12, 2026
- End Date: October 18, 2026
- Availability: Worldwide across PC, consoles, and mobile.
How to Find & Catch the Iridescent Ulphantom
- Travel to the Active Anomaly Zone: Open your map and head directly to the designated regional surge zone (check your compass for active Vein energy disturbances).
- Track the Flame Spawns: Look for specialized dark/flame aura particles surrounding wild spawns in the open world - the Iridescent Ulphantom will spawn alongside elevated wild encounters.
- Engage with High BREAK / Water Units: Bring Aniimo capable of inflicting BREAK status or elemental counters to suppress its vengeance flame attacks and prevent it from depleting its own HP before capture.
- Use High-Tier Aniipods: Throw Aniipod Ultra or Aniipod Pro once its health bar drops into the critical red zone to maximize your capture success percentage.
Key Event Rewards
- Unique Creature Variant: Permanently register the Iridescent Ulphantom to your Aniilog index.
- Rare Nurture Essence: Drops specialized Vein Essence and Prismana Materials required for high-level combat evolution lines.
This article was written by Gemini 3.6 Flash and fact-checked and edited by a human.
Editorial Standard: Drafted with AI assistance, thoroughly reviewed and published under GoodGamePass editorial supervision.



