You know what it looks like… but what is it called?
TAKE THE QUIZ“set oneself”
The following 2 entries include the term set oneself.
set (oneself) against
phrasal verb: to decide that one does not support (something or someone) : to be or become opposed to (something or someone)
set (oneself) up as (something)
phrasal verb: to try to make people believe that one is (something)
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Merriam-Webster unabridged