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

Call the Skybreaker (New Capenna Commander #333)
Cenn's Enlistment (Modern Masters #9)
Decaying Time Loop (Doctor Who #80)
Embrace the Unknown (Outlaws of Thunder Junction Commander #28)
Flame Jab (Eternal Masters #131)
Glamerdye (Eventide #21)
Oona's Grace (Commander 2019 #91)
Reality Scramble (Commander 2018 #25)
Throes of Chaos (Forgotten Realms Commander #146)
Waves of Aggression (Eventide #148)

The arc of my blade has carved a path of light to the end of these results.