Declension table of ?viṣṇudeva

Masculine	Singular	Dual	Plural
Nominative	viṣṇudevaḥ	viṣṇudevau	viṣṇudevāḥ
Vocative	viṣṇudeva	viṣṇudevau	viṣṇudevāḥ
Accusative	viṣṇudevam	viṣṇudevau	viṣṇudevān
Instrumental	viṣṇudevena	viṣṇudevābhyām	viṣṇudevaiḥ viṣṇudevebhiḥ
Dative	viṣṇudevāya	viṣṇudevābhyām	viṣṇudevebhyaḥ
Ablative	viṣṇudevāt	viṣṇudevābhyām	viṣṇudevebhyaḥ
Genitive	viṣṇudevasya	viṣṇudevayoḥ	viṣṇudevānām
Locative	viṣṇudeve	viṣṇudevayoḥ	viṣṇudeveṣu

Compound viṣṇudeva -

Adverb -viṣṇudevam -viṣṇudevāt