遗物
先看它在什么时候真的有用
开枪时大概率附带一道贯穿整条敌线的奥术波，伤害按主武器的元素战技伤害结算。射速越快触发越勤，清杂兵一扫一片，单挑 Boss 时收益一般。
带入规划器怎么决定要不要拿
Take it when your current route already produces the crowd, battle skill, frequency 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。