Declension table of ?samuddhvasta

Masculine	Singular	Dual	Plural
Nominative	samuddhvastaḥ	samuddhvastau	samuddhvastāḥ
Vocative	samuddhvasta	samuddhvastau	samuddhvastāḥ
Accusative	samuddhvastam	samuddhvastau	samuddhvastān
Instrumental	samuddhvastena	samuddhvastābhyām	samuddhvastaiḥ
Dative	samuddhvastāya	samuddhvastābhyām	samuddhvastebhyaḥ
Ablative	samuddhvastāt	samuddhvastābhyām	samuddhvastebhyaḥ
Genitive	samuddhvastasya	samuddhvastayoḥ	samuddhvastānām
Locative	samuddhvaste	samuddhvastayoḥ	samuddhvasteṣu

Compound samuddhvasta -

Adverb -samuddhvastam -samuddhvastāt