技能
先看它在什么时候真的有用
银箭引擎的纯产量乘区：每次触发都有高自适应概率再多射一支，平均下来箭的总量多出一大截。所有按命中结算的效果（碎箭、标记、处决）都跟着受益，银箭树里拿得越多，这张越值。
带入规划器怎么决定要不要拿
Take it when your current route already produces the extra shot, luck, 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。