遗物
先看它在什么时候真的有用
腐蚀流的压轴件：对已有腐蚀的敌人再叠腐蚀会追加100%酸性伤害，必杀技还能召唤全场酸雨批量上腐蚀。碎裂再送15层成长，几乎不存在亏的时候。
带入规划器怎么决定要不要拿
Take it when your current route already produces the corrosion, acid, ultimate 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。