The College is sealed off to protect the students and staff from whatever or whoever has been sapping magic from victims. Zaccheroni puts the students' survival abilities to the test, but with a catch: no sorcery allowed.
Apparently closures do 
happen every now and then.
.يبدو أنّ الإغلاق يحدث من حين لآخر
Al parecer,
es una medida bastante común.
Al parecer,
es una medida bastante común.
Cela dit,
ce genre de situation arrive parfois.
Pare che chiusure come questa non siano insolite.
Parece que o fechamento em
si acontece de vez em quando.
Вообще, такое время от времени
случается.