Ascension MaterialThunder Strum
Thunder Strum is a 4★ material in Honkai: Star Rail. See how to get it and which characters/light cones need it below.
Thunder Strum is a material ★4 in Honkai: Star Rail. 2 characters need this item to level up. Obtainable from 2 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 favorite instrument of the Rocking Rebels. An ascension material for Lightning characters.
Lore
Concerts in Planarcadia offer a spectacle you won't see anywhere else. Under the light of the Phantasmoon, the audience's soaring emotions actually manifest and react with the performers' instruments. Taming this physical emotion is a key skill for any musician here. Sometimes, after being soaked in that fervor for too long, an instrument might even evolve into a deadly weapon. "Burn this place to the ground! Salt the earth! Burn this place to the ground! Leave nothing but ruins!" — A rock singer, during a solo concert "Arcadia's a dream! The best place I've seen! The moon's out in bloom, and the air is serene!" — The same singer, at a gala hosted by Pearl
Farm it smart
A BOSS material. The biggest pain: weekly bosses cap rewards per week, so this is often the BOTTLENECK that traps a character at the 70→80 ascension. Only fight the boss dropping mats for the character you are ACTUALLY building — do not spread thin.
Material Planner →How to obtain
- Stagnant Shadow: Dovebrook District
- Omni-Synthesizer — Material Exchange
Used to upgrade
Stats
| Rarity | ★★★★ |
| Type | Ascension Material |
| Stack limit | 99,999 |
Official names in every language
| Tiếng Việt | Dây Đàn Sấm Cuồng |
| English | Thunder Strum |
| 日本語 | 狂雷のストローク |
| 한국어 | 광뢰의 스트로크 |
| 繁體中文 | 狂雷掃弦 |
| 简体中文 | 狂雷扫弦 |
Where to use it / Related tools
Thunder Strum 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 Thunder Strum?
A favorite instrument of the Rocking Rebels. An ascension material for Lightning characters.
Where do you get Thunder Strum?
Sources for Thunder Strum: Stagnant Shadow: Dovebrook District · Omni-Synthesizer — Material Exchange. See the “How to obtain” section above for details on each source.
What type of item is Thunder Strum?
Thunder Strum is a 4★ material in Honkai: Star Rail, in the “Ascension Material” category.
What is Thunder Strum used for?
Thunder Strum is used by 2 characters.