あまみのくろうさぎであれば
奄美の黒兎であれば
amamino kurōsagideareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of あまみのくろうさぎ

1. If it were the Amami black rabbit; If the Amami black rabbit existed

Ba Conditional
Usually Written in Kana