Trace MaterialCosmic Sandpit
Cosmic Sandpit is a 4★ material in Honkai: Star Rail. See how to get it and which characters/light cones need it below.
Cosmic Sandpit is a material ★4 in Honkai: Star Rail. 2 characters need this item to level up. 2 Light Cones need this item to level up. Obtainable from 3 different sources in-game.
Last updated: 30/07/2026
The figures on this page come directly from gamevika's internal game data store (counted/read straight from the real records), not an estimate or copy from elsewhere.
Description
A cosmic sandpit drawn by a Navigator after surveying the universe. Can greatly level up Traces for Erudition characters.
Lore
The picture painted by the pioneers is all-encompassing, and the simulated sandpit is vast enough to embrace the entire sea of stars. Latecomers take this as the starting point of their journey. Packing the sandpit into their handbags, they follow in the footsteps of their predecessors. It was not until the stars fell and she looked back that she realized: through all the meetings and partings along the way, she had journeyed ahead of everyone else, stepping among stars unrecorded even by the sandpit. "The meaning of the universe must lie beyond the universe."
Farm it smart
A Trace (skill tree) material. Harsh truth: traces devour materials late-game, especially levels 8–10. Do not level evenly — pour into Skill/Ultimate (your main damage) first, Basic ATK last.
Material Planner →How to obtain
- Calyx: Seafeld TV Tower
- Omni-Synthesizer — Material Synthesis
- Omni-Synthesizer — Material Exchange
Used to upgrade
Used for Light Cones
Stats
| Rarity | ★★★★ |
| Type | Trace Material |
| Stack limit | 99,999 |
Official names in every language
| Tiếng Việt | Sa Bàn Vũ Trụ |
| English | Cosmic Sandpit |
| 日本語 | 銀河のサンドボックス |
| 한국어 | 은하 모형판 |
| 繁體中文 | 銀河沙盤 |
| 简体中文 | 银河沙盘 |
Where to use it / Related tools
Cosmic Sandpit is an upgrade material — check the Material Planner to see how much you need for the character you're building.
Same-type items
FAQ
What is Cosmic Sandpit?
A cosmic sandpit drawn by a Navigator after surveying the universe. Can greatly level up Traces for Erudition characters.
Where do you get Cosmic Sandpit?
Sources for Cosmic Sandpit: Calyx: Seafeld TV Tower · Omni-Synthesizer — Material Synthesis · Omni-Synthesizer — Material Exchange. See the “How to obtain” section above for details on each source.
What type of item is Cosmic Sandpit?
Cosmic Sandpit is a 4★ material in Honkai: Star Rail, in the “Trace Material” category.
What is Cosmic Sandpit used for?
Cosmic Sandpit is used by 2 characters, 2 Light Cones.