Filed from 2 published puzzles

ACTFIVE

Set to 2 different clues across 2 published puzzles, most often “When Juliet says "O happy dagger!"” — The New York Times, Sunday, 22 November 2009.

7 letters

Every clue on record, most used first

When Juliet says "O happy dagger!"once
The New York Times — Sunday, 22 November 2009
When Macbeth meets his fateonce
The New York Times — Wednesday, 16 October 2002