The Clue Point of no return?
The Answer ACE
The phrase "point of no return" can refer to a critical moment where a decision is made, and you can't go back. In card games, an "ace" is often a powerful card that can change the outcome of the game. When you play an ace, you are fully committing to your strategy, similar to reaching a point of no return. Thus, "ACE" fits the clue as it symbolizes a decisive moment.