Oneiric Shard: Usage and Acquisition Oneiric Shards(https://lootbar.gg/top-up/honk....ai-star-rail-top-up? ) are a premium currency in 'Honkai Star Rail', primarily used to purchase special items and accelerate character progression, including the acquisition of the star rail express supply pass(https://lootbar.gg/top-up/honk....ai-star-rail-top-up? ) . Players can obtain these valuable shards by topping up on official game trading platforms or through various in-game event