Limited time to catch with 制限時間
Kanji Explanation: Boundaries and limits with 限

As a form of exam, Makoto is tasked with catching a plush bear that’s skilled at escaping.
- 支部長:
- 「魔法
( は使( わずに制限( 時間( は1時間( よ」- “Your time limit is one hour during which you cannot use magic.”
Key Points
制限
( 時間( = a fixed time limit for the task制限
( 時間( means the allowed amount of time for doing something, so here it is the official time limit for the test.It is more specific than just saying one hour; it means one hour is the maximum time she is being given.
使
( わずに = without using魔法
( は使( わずに means “without using magic” and gives the condition under which the task must be done.〜ずに is a written-to-neutral style equivalent of 〜ないで, so the sense is “catch it without using magic”.
Sentence-ending よ adds firm instruction
The final よ gives the statement an assertive, informing tone, which fits someone laying out test conditions.
It does not soften the line; it makes the rule sound clearly delivered to the listener.