技能
先看它在什么时候真的有用
银箭流的根基：先开枪、再闪避，就会朝最近的敌人补一支银箭，伤害按武器元素伤害的一部分结算。单看数值很普通，它的价值在于 Elena 一大半技能都挂在这个触发器上——它是你围绕搭建的前置，而不是终点收益。
带入规划器怎么决定要不要拿
Take it when your current route already produces the extra shot, reliable 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。