Declension table of ?mantratattva

Neuter	Singular	Dual	Plural
Nominative	mantratattvam	mantratattve	mantratattvāni
Vocative	mantratattva	mantratattve	mantratattvāni
Accusative	mantratattvam	mantratattve	mantratattvāni
Instrumental	mantratattvena	mantratattvābhyām	mantratattvaiḥ
Dative	mantratattvāya	mantratattvābhyām	mantratattvebhyaḥ
Ablative	mantratattvāt	mantratattvābhyām	mantratattvebhyaḥ
Genitive	mantratattvasya	mantratattvayoḥ	mantratattvānām
Locative	mantratattve	mantratattvayoḥ	mantratattveṣu

Compound mantratattva -

Adverb -mantratattvam -mantratattvāt