遗物
先看它在什么时候真的有用
持久战的滚雪球配件：进战斗后持续射击会一层层堆子弹攻击，叠满后武器完全不再扩散。满层的指哪打哪才是真正卖点，非常适合远距离和打 Boss；速战速决的场景吃不满收益。
带入规划器怎么决定要不要拿
Take it when your current route already produces the reliable, boss signals. The value comes from repeating that event, not from the item name or rarity alone.
If none of its triggers are happening yet, keep the slot open for a pick that strengthens the engine already on screen.
证据和关联对象
证据标记：Data-backed blueprint。数据按英文名称核对，中文名称只作为查找辅助。