Declension table of arcana

Masculine	Singular	Dual	Plural
Nominative	arcanaḥ	arcanau	arcanāḥ
Vocative	arcana	arcanau	arcanāḥ
Accusative	arcanam	arcanau	arcanān
Instrumental	arcanena	arcanābhyām	arcanaiḥ arcanebhiḥ
Dative	arcanāya	arcanābhyām	arcanebhyaḥ
Ablative	arcanāt	arcanābhyām	arcanebhyaḥ
Genitive	arcanasya	arcanayoḥ	arcanānām
Locative	arcane	arcanayoḥ	arcaneṣu

Compound arcana -

Adverb -arcanam -arcanāt