くびわおうこうもりであれば
首輪大蝙蝠であれば
kubiwa ō kōmorideareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of くびわおおこうもり

1. If it were a giant bat with a collar; If a giant bat with a collar existed

Ba Conditional
Usually Written in Kana