10 cards where the text includes “aftermath” and the color identity ≤ RUW

Commit // Memory (The Lost Caverns of Ixalan Commander #147)
Dusk // Dawn (Murders at Karlov Manor Commander #61)
Failure // Comply (Amonkhet #221)
Farm // Market (Commander 2019 #192)
Indulge // Excess (New Capenna Commander #46)
Insult // Injury (Amonkhet #213)
Leave // Chance (Hour of Devastation #153)
Onward // Victory (Amonkhet #218)
Reduce // Rubble (Amonkhet #216)
Refuse // Cooperate (Commander 2019 #199)

This search is finished. Now the real work can begin.