Cain has been named a baron and given a mansion—an old, dilapidated one. But with his magic, he's able to fix it up like new in no time, and he immediately starts preparing to host a debut party to introduce his mansion to noble society.
must host a party to debut it. 
That's the rule.
يُقيمون حفلة للإعلان عن ذلك. هكذا هي القاعدة
deben presentarla en sociedad.
deben presentarla en sociedad.
devono tenere una festa di inaugurazione.
È la regola.
devem fazer uma festa
de estreia. É uma regra.
устраивает в честь этого ужин.
 Это традиция.