Historical clue formulations

• Spoils — 2025-01-15
• Spoils — 2021-06-18
• Poisons — 2018-07-07
• Ruins the reputation of — 2016-10-29
• Pollutes — 2015-04-30
• Blots — 2014-04-18
• Spoils — 2013-10-06
• Clouds — 2011-09-30
• Contaminates — 2007-02-19
• Sullies — 1995-11-02