遗物
先看它在什么时候真的有用
打出满蓄力射击时会额外复制一发一模一样的子弹，内置 2 秒冷却。对蓄力流武器来说约等于把最重的一击白嫖翻倍；对突突流基本没感觉。选不选完全看你的开火方式。
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。