Every distinct wording since 2010, newest first.
April 22, 2021 · Strixhaven
Effects may refer to boast abilities. If an effect refers to a creature boasting, it means its boast ability being activated.
February 5, 2021 · Kaldheim
Exiling a card using its foretell ability is a special action, which doesn’t use the stack. See rule 116, “Special Actions.”