年玉 としだまキャンペーンだったら
otoshida makyampēndattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of お年玉キャンペーン

1. If it were an Otoshidama campaign…; If there was an Otoshidama campaign…; When it's an Otoshidama campaign…

Tara Conditional