Final answer:
To minimize the probability of the Once'ler attacking you when you enter, be cautious and assertive, take advantage of openings, and time your entry strategically.
Step-by-step explanation:
In order to minimize the probability of the Once'ler attacking you when you enter, you can follow strategies from the Art of War. First, it is important to be cautious and assertive, showing strength and control in the situation. Second, take advantage of any openings or weaknesses that the Once'ler may leave exposed. Third, try to anticipate the Once'ler's movements and time your entry accordingly, catching them off guard.